308 ballistics by the inch
In the second post below, youll see some outstanding 500 yard targets that I shot with the rifle. By ammo type, the average loss per inch was: 24.6 (Win 147 FMJ), 22.8 (IMI 150 FMJ), 20.9 (Fed GMM 168gr), and 22.5 (Win 180PP). Click Thanks for the kinds words about the 308 and 300 Win barrel length posts. Published Mar 29, 2021 12:55 PM EDT. That works out to an average loss of 22.7 fps per inch. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. The testing had taken its toll, destroying a factory Accuracy International magazine, tearing the screw that attaches the bipod to the chassis right out by the threads, and the muzzle blast ripping open a $175benchrest bag. Thank you. The .327 Fed. This was with Varget powder. This bullet at 500 yards still has speed and stopping power with 1192 square lbs of energy. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; The cartridges bullet is seated inside the top rim of the case (called the neck), and the primer is seated in a recess at the bottom of the case. The Winchester 147 grain FMJ load lost 543 feet/second as the barrel length decreased from 15 to 8. Do you see any use for a 10 308 Winchester? Cutting the barrel from 28 to 16.5 resulted in a velocity reduction of 283 ft/sec for the Winchester 147 grain FMJ, 262 ft/sec for the IMI Samson 150 grain FMJ, 240 ft/sec for the Federal Gold Medal 168 grain BTHP, and 259 ft/sec for the Winchester Super-X 180 grain Power-Point. mostly) paid for everything ourselves, and we did not receive any kind of sponsorship For firearms and ammunition, these differences are measured in PSI, fractions of an inch, and millimeters. The rifle is fine. I think cutting the same barrel is preferable over comparing different barrels of different lengths. I shook vigorously from head to toe. When you pull the trigger on your M14, it starts a chain reaction. Is the reverse possible? No, I did not. With the .30 caliber bullet diameter being translated as 7.62 millimeters, the new 7.62x51mm cartridge was born. The new(ish) .300 Blackout bears a similar (albeit rare) designation of 7.6235, and the standard Russian sniper round is the 7.62x54R. The rifle is fired at 100 yards, from a bipod with a rear bag, for 5-rounds. _gaq.push(['_setDomainName', '.accurateshooter.com']); AVG change ft/sec shows the difference between the running averages of the 28 and 16.5 barrels. Velocity loss per inch of barrel was .6 ft/sec away (22.8 ft/sec)from the value calculated with 5 shot strings. No complaints, no problems. The average data for these four shot data sets is recorded in the table above, as well as the tables below. While 7.62 NATO and .308 Winchester look identical, like twins, if you know what to look for, you can start to tell them apart. The .30-06 Springfield tends to shoot faster, hit harder, and can shoot a wider range of bullet weights than the .308 Winchester. Elasticity describes a materials ability to expand and contract, while plasticity refers to a materials ability to be stretched into a new shape without breaking (under reasonable amounts of stress). The Federal shows a fairly straight line. Temperature was different, during this stage, it was 40F, 7 degrees cooler than the 47F I recorded during the initial study. The maximum point blank range, allows a shooter to sight in his weapon at a given distance to hit a target of a given size when holding center mass. This was an average decrease of 77.6 feet/second per inch of barrel length. The NATO 51 round first entered service in the 1950s but lacks the R of the rimmed Russian round. Get the latest in military news, entertainment and gear in your inbox daily. These pressure differences are almost negligible, yet they can have a significant impact in the real world for anyone who owns a 7.62-chambered firearm or who likes to reload their own ammo. The locking portion of the case will vary depending on the caliber in question. As a Wildcatter it gets more so! All these details have been generated using our . December 27, 2014 Acknowledgements. Fear not. .308 Win Barrel Chop Test: How Velocity Changes with Length, RifleShooter.com .308 Win Barrel Cut-Down Velocity Test, .308 Win Velocity vs. Barrel Length 28 to 16.5 Cut-Down Test, Surprising Results in .223 Rem Barrel Cut-Down Velocity Test, Barrel Length and Velocity in a .223 Rem Barrel Cut-Down Test, http://rifleshooter.com/wp-content/uploads/2015/01/custom-16.5-rem-700-308.jpg. Average velocity and standard deviation were logged for each round. Copyright GunData.org 2015 | Koenig Media, LLC | Links | Sitemap | Advertise. This could have some potentially expensive consequences. When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. This was an average decrease of 60.7 feet/second per inch of barrel length. Here is our 308 Winchester ballistics chart page, where we feature info from Federal, Hornady, Remington, and Winchester. Once it reaches 500 yards, it has slowed but it's still maintaining . With barrels, one wonders Can a little more length provide a meaningful velocity gain? To answer that question, Rifleshooter.com performed an interesting test, cutting a .308 Win barrel from 28 all the way down to 16.5. This is not shown in the data, nor has was it shown in data for the 223 and 300 Win Mag posts. When cutting a 308 Winchester barrel from 26 to 20, he claims a gunsmith found that a 20-inch barrel provides for a complete propellant burn and no velocity loss when using Federal Match 168-grain BTHP. which was specifically designed for long-range target shooting. If you liked this postsubscribe to this blog (top right corner of page). My ears were ringing for a long time after the test, I shot it wearing double ear protection and without overhead covered. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. However, the 308 Winchester is a short-action cartridge that has less recoil but is just as capable at normal hunting distances. calibers/cartridges + So what does the charting of the .308 Winchester's external ballistics tell us exactly? The gun and support equipment werent in much better shape. Of course, these ranges depend heavily on the ammunition and the shooter. DPX: Federal 240 gr. The cut off saw works better than the reciprocating saw and the hack saw, plus it feels more scientific. or remuneration from anyone. There are plenty of good sources of information on this topic. var _gaq = _gaq || []; In the following cases, Winchester 147 grain FMJ 12, Federal 168 grain Gold Medal 12 and 9, and Winchester 180 grain Power-Point 11, the chronograph only recorded 4 shots of the five shot string. Copyright GunData.org 2015 | Koenig Media, LLC | Links | Sitemap | Advertise. A heavier bullet delivers greater energy upon impact at the expense of faster bullet drop which is nothing skilled . Note: I also fired a 30 shots of the IMI Samson 7.62mm 150 grain FMJ with the 28 and 16.5 lengths- Ill discuss why later. or 7.62 NATO ammo. them by name does not constitute an endorsement of any kind. The 308 Win's .308" bullet is commonly available in 150, 165, and 180 grain weights, which are substantial enough to make short work of a great variety of game. CLICK HERE to Read the Rifleshooter.com Test. 7.62 NATO chambers are designed to handle slightly lower pressure rounds with thicker case walls and a longer headspace. Barrel length, Barrel length and velocity, External Ballistic Data, Rifles The chops tests ranged in barrel length from 18" down to 3". The short answers to these questions are yes and maybe. At 55 grains, its bullet achieves 3,910 fps; at 100 grains, 2,960 fps. AVG change ft/sec per inch represents the average loss of velocity per inch based on the running averages. I had a 34 Border on my Palma rifle for a time. Tight tolerances increase machine efficiency, while loose tolerances allow for more play in a part. 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; Selecting the best barrel length for the .300 BLK can be a double-edged sword. When looking at .277 Fury's ballistics, . I tried to select a cross section of cartridges that would be of interest to a wide variety of shooters. Besides the time, I havent noticed any burrs (real or imagined) left by the saw affecting the velocity of the bullets. pistols are measured, but revolvers are measured as the length of the barrel in front of In 1957, NATO also adopted the new American cartridge, earning it the alternate designation 7.62 NATO. That same year, U.S. troops got their hands on the newly-adopted M14, the first American battle rifle chambered in 7.62x51mm. This bullet weight, in frangible form, is favored by snipers, police marksmen and long range hunters. for a graph of how that particular ammunition performed, or you can download the raw Troubleshooting seized ejectors. A. Share the post ".308 Win Barrel Cut-Down Test: Velocity vs. Barrel Length", Tags: .308 Win, 7.62x51 cut-down test, Barrel, Rifleshooter.com, Saw, Velocity. 308 Winchester/ 7.62x51mm NATO Short barrel length and velocity- A six inch 308 bolt gun? I like them- in some ways you dont lose a lot. Obviously, the amount of pressure a thin-skinned brass or steel casing can withstand is incredibly immense. The short barrels gas out pretty quickly. It will a produce a line graph showing the bullet drop and flight path of the bullet. *Casing image above is an artist rendering and not a real photo of .308 Winchester (7.62mm NATO) Ballistics cartridge. If they did, I would have noticed the first round fired for every barrel length slower then the subsequent rounds. Ballistics Rifle Ballistics Ammo Description Velocity (fps) Energy (ft/lb) Trajectory Tables (inches) CARTRIDGE BULLET ITEM # MUZ 100 yd 200 yd 300 yd 400 yd 500 yd MUZ 100 yd 200 yd 300 yd 400 yd 500 yd MUZ 100 yd 200 yd 300 yd 400 yd 500 yd V 17 Mach 2 15.5 gr. Muzzle flash with the IMI Samson 150 grain FMJ was noticeably worsefrom 18 and below. Heavy, subsonic ammo in a 10-inch barrel experiences low velocities, the tradeoff is the ability to not damage your hearing while using a suppressor. In addition to riding on the back of the 7.62 NATOs short-lived military career, the .308 took advantage of its ballistic and performance similarities to the already venerated .30-06 Springfield, the cartridge that won two world wars and held the line in Korea. Why you ask? Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. Note the change in MPBR averages 27 yards with an 11.5 inch change in barrel length. I like it a lot. The answer may surprise you. Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. Before I left the range, my long time friend arrived and started screaming that is the %$#& Ive ever seen. Average velocity and standard deviation was logged for each round. Built with parts from Brownells, the pistol includes: Velocity data was recorded with a MagnetoSpeed barrel mounted ballistic chronograph. Yes, I guess I did. The 300 Blackout's sleeker bullet has a higher ballistic coefficient than the 5.5645, but with less speed its trajectory invariably arcs more sharply. Take this into consideration when comparing calibers using our Powder burn rates can also make a difference. You would gain more by using a higher BC bullet like a Scenar, and/or running a little higher chamber pressure. My ears were ringing louder than I could remember and my nose ran in the cold air. Super Short Precision Rifles: Is there such thing as a 16.5 .308 Tactical Bolt Action Rifle? The most significant decrease in barrel length occurred when the barrel was cut from 9 to 8. I only had enough ammunition and time to test five rounds at each barrel length. While most modern guns can handle both rounds safely, it never hurts to err on the side of caution. Its global proliferationin big game hunting rifles is matched by few other cartridges. Over the past few years, Rifleshooter.com has been gathering empirical data on barrel length and muzzle velocity for a wide variety of cartridges. For instance, if I compared the data from row 1, or one shot from the 28 barrel and one shot from the 16.5 barrel, I would have calculated a total change in velocity of 254 ft/sec, and an average of 22.1 ft/sec per inch. Or not. Would be interesting to find out. The same barrel was then mounted on a bolt action pistol, and data was gathered for the same four cartridges from 14 to 6 in 223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. Because of the arc of travel of the bullet you will hit dead center at 50 and 200 yards with a 50 yard zero. How to Sight in a Scope - Step by Step Guide. These figures give this bullet a 4.4 out of 20 power rank using our algorithm. By adding trajectories to the panel on the right you may produce charts and graphs that show the different trajectories side by side. Two of the most popular 30 cal cartridges are the 30-06 and 308. home + Building something to cut up isnt the most rewarding experience; however, I plan on contouring and finishing the barrel to 16.25 (thats why I stopped at 16.5). Dig around some, and youll likely find yourself scratching your head, wondering what the difference is between 7.62 and .308 rounds. Yes, I am very impressed. Very well. lb Muzzle Velocity ft/sec. class bullets. The .308 Winchester / 7.62x51mm NATO was created in 1952 and is based on the .300 savage round a round created in 1920. 30-30 Ballistics Chart & Coefficient. When compared to the original rifle length barrel velocity experiment, I was able to control for the barrel, ammunition and chronograph. I selected Federal 190 grain Gold Medal ammunition for this test. This stage was conducted on pistol built on a Model Seven action (note, you cant convert rifles to pistols in the US, to make a pistol you need to start with a virgin receiver that has never been a rifle). var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; When that happens Ill post a link there. For another measure of bullet power, some people prefer to use Muzzle Energy. This project, and all of its results, is only our fault. When you switch this out with a .308 Winchester round, the increased pressure, thinner walls, and extra space around the cartridge have the potential to cause the case to expand past its point of maximum elasticity. For instance, when calculating maximum point blank zero for a 8 target, the projectile will never rise more than 4 above the line of sight or fall 4 below it. data is provided purely for entertainment purposes - to better facilitate arguments brass or casing) is the shell of a firearms cartridge that houses the propellant. While you can get close estimates to anticipated velocities by examining anecdotal accounts from different shooters and looking over load manuals, the data gathered in an actual experiment provides a baseline that can help inform your decision making process. A summary of the data for all four cartridges is provided below. At 10-inches, muzzle velocity hasn't reached its peak. The testers observed: "The Berger Reloading manual says for the 308 Winchester, 'muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel'." How the Test Was Done The testers described their procedure as follows: "Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. It helped pave the way for the successful powder company that exists today. The U.S. Army lists the 7.62s effective range (and thus, the .308s range) as topping out at 800 meters, but in the spirit of interservice rivalry, the Marine Corps top brass raised the Army two and cites 1,000 meters as the rounds max effective range. Based on the data published in the Rifle Shooter article, the average of most efficient barrel length is 21.7 inches. It's fine to 600-800 yards and is fine at that range out of an 18" barrel. Remington Model Seven Actions are available! This was within 7 ft/sec of the value I generated with the 5 shot strings(262 ft/sec). Since we would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut, we decided to eliminate gathering data on group sizes. Here is a list of all 23 different data sets we have tested. Yes, I do. Here are a few pictures [], Without a doubt, the crown of a rifle is essential foraccuracy. I actually had this happen on two different mags. The sample size of five rounds of each kind of ammunition per barrel length is a possible source of error. Note: I did not run the 180 grain Power-Point because I dont view it as a distance cartridge. This means that when firing a .308 round in a 7.62 chamber, the .308 brass will stretch beyond its intended elastic range. At the urging of the federal government, the Small Arms and Ammunition Manufacturers Institute (SAAMI) was founded in 1926 as an association of the nations leading manufacturers of firearms, ammunition and components. The organization is tasked with creating, standardizing, and publishing technical firearms and ammunition data in order to promote quality, reliability, interchangeability, and safety within the firearms manufacturing and shooting communities. February 1, 2016 In the past 20 plus years (Im getting old) of shooting stuff-120mm tank rounds, machine guns, AT4 missiles and everything in between- this was possibly the coolest Ive fired to date. .308 Win Barrel Cut-Down Test: Velocity vs. Barrel Length, .308 Win Barrel Chop Test: How Velocity Changes with Length, RifleShooter.com .308 Win Barrel Cut-Down Velocity Test, Surprising Results in .223 Rem Barrel Cut-Down Velocity Test, .223 Rem Velocity by Barrel Length Cut-Down Test Results. The bullet does not drop below the speed within . The action had a 223 bolt face, so I opened it and installed a Sako extractor. If you take a look at the series posts (below) on my 16.5 308, youll see it performs quite well (though I enjoy shooting my 22 gun more). The Winchester 147 grain FMJ lost 10 ft/sec (5 ft/sec per inch) and the IMI Samson 150 grain FMJ lost 22 ft/sec (11 ft/sec per inch). over what ammo or caliber or gun is "best." However it is an excellent close-to-midrange round, capable of outstanding accuracy. The vast majority of rifles, carbines, and pistols chambered in .308 Winchester can safely sling 7.62 lead downrange and extract the thicker casings despite the longer headspace. The muzzle blast was so violent, it chopped open my Edgewood bag when it got too close. Ballistic Trajectory Calculator Ballistic Coefficient Calculator To make the test even more interesting, four different types of .308 Win factory ammunition were chronographed at each barrel length. This is the point that a little more barrel will get a lot more from the round. All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized, Sig Sauer MCX Virtus PCP Air Rifle Review- Initial Impressions, Project Guns- Gunsmithing articles and posts, 308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), 223 Remington/5.56mm NATO Barrel length versus Velocity- Short Barrels- 6 to 14 inches. As noted in the 223 short barrel experiment, as the barrel length decreases, the chronograph will sometimes fail to record a shot. Compare the above rates of loss to those found in 308 Winchester / 7.62x51mm NATO: Barrel Length versus Velocity (28 to 16.5), where the Winchester 147 grain FMJ averaged 24.6 feet/second per inch of barrel, IMI 150 grain FMJ averaged 22.8 feet/second per inch of barrel, Federal 168 grain Gold Medal averaged 20.9 feet/second per inch of barrel A For example in this chart I lowered the velocity to . Enter your email address to subscribe and receive notifications of new posts by email. The PowerRank is an estimation of the cartridge power. Good ergonomics, and a great value for the money. Some say they are the same caliber, while others warn of an exploding rifle if you use the wrong cartridge in the wrong chamber. Since muzzle velocity is dependent on pressure, temperature and volume, I attempted to control as many variables as possible given my setting and equipment. In 1952, Winchester beat the Army at its own game and launched the new .308 Winchester to the civilian market, a good two years before the 7.6251 saw the Pentagons official green light. polygonal rifling + This results in a 7.62 case that is ever so . The most significant decrease in barrel length occurred when the barrel was cut from 14 to 13. At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. This includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and complete data sets for each type of ammo. Anyone who uses our data owes him AVG 28 ft/sec and AVG 16.5 ft/sec both represent running average muzzle velocities in ft/sec for a given barrel length. using Hornady 168gr A-MAX Superformance Match factory ammo. Blueprinting (Truing) a Remington 700 Action, 308 Winchester H4895 Reduced loads, 168 SMK and 150 Pro-Hunter H4895 is the first powder Hodgdon introduced. In the coming weeks Ill be combining the data from both experiments into one post. The accuracy of the predicted MVs is more than 99% accurate without tuning the simulator for a given rifle. The cuts were made in one-inch intervals with a rotary saw. Temperature was 47 F.. Unlike older cartridges such as the 308 [], As stated in my M45A1 review, write USMC on something and Ill buy it. Last week I found out Cerakote has a color called USMC Red. Flawlessly. The IMI 150 grain FMJ 7.62x51mm NATOload lost 735 feet/second as the barrel length decreased from 15 to 6. Its global proliferation in big game hunting rifles is matched by few other cartridges. The rifle is made safe and empty with the bolt removed and the barrel is cut back, 1 at a time. We did all the work. The barrel was cut off using a cold saw. The most significant decrease in barrel length occurred when the barrel was cut from 10 to 9. Red Oak, White, or Chestnut for Deer Herd? This is how semi-auto were either familiar with, or because they were what was available, and mentioning For instance, the Berger Reloading manual says for the 308 Winchester, muzzle velocity will increase (or decrease) by approximately 20 fps per inch from a standard 24 barrel. This resulted in a velocity loss of 94 feet/second. Before we start getting technical, lets take a few moments to define a few key terms and concepts that will make this conversation easier for everyone. Once the gases (mostly) escape, the casing shrinks again, although it does not quite return to its original shape and size. contrast, the chamber pressure of 5.56 NATO is only roughly 75% of that, at about 60,000 PSI, while 6.5 Creedmoor and .308 Win have only slightly higher chamber pressures at 62,000 PSI. cartridge is also about .2-inch shorter. We'd like to personally and specifically thank Pat Childs at Fin & Feather in Iowa City, as he not only helped get most of our ammunition and other supplies, he was the brilliant gunsmith who worked with us to make this insane project much more practical.Without his help all of this would have been much more difficult and perhaps impossible. Try these too.. Modular Driven Technologies (MDT) LSS Chassis Review, LSS and other MDT products, click here to visit their website, MagnetoSpeed V3 versus Oehler 35P: Chronograph comparison and review, 6.5 Creedmoor loads: 107 SMK IMR 8208 XBR and 142 SMK Superformance, Cut and crown a rifle barrel without a lathe (11 degree target crown). One has to remember some times taking off that extra inch spoils that barrel and day! When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. The barrel was cut off using a cold saw. JHP: Cor Bon 225 gr. Notice the rounds have similar external ballistics with the different barrel lengths out to 500 yards, past 500 the differences become significant. Wind Direction is: 3.0 o'clock and a Wind Velocity of: 10.0 Miles per hour. Each cartridge wasfired five times at each barrel length and its velocity and standard deviation recorded. Never miss a post! The muzzle blast from the short barrel eroded away some of the chassis! Ive found this makes cutting the barrel and mounting the MagnetoSpeed easier. Yes, I did for the 223 post. No, and yes. And if you think you could do better, feel free to spend the money Interestingly, these numbers jive pretty well with estimates found in reloading manuals. The contents of Rifleshooter.com are produced for informational purposes only and should be performed by competent gunsmiths only. Shilen .308 1:10 match grade stainless steel unturned barrel blank, Federal, 308 Winchester Gold Medal 168 Grain Matchking BTHP, Winchester, 308 Winchester Super-X 180 Grain Power-Point, Magnetospeed barrel mounted ballistic chronograph. That works out to an average loss of 22.7 fps per inch. The cartridge case (a.k.a. Test Barrel Lost 22.7 FPS Per Inch (.308 Win Chambering) However, testing indicates it may not be as much as initially thought. Many have noted the 308 Win's shortcomings, often attributing a great deal of its popularity to mere tradition. We may earn revenue from the products available on this page and participate in affiliate programs. This was an average decrease of 81.7 feet/second per inch of barrel length. This resulted in a velocity loss of 106 feet/second. So in quick summary the .308 Winchester also known by it's military name the 7.62x51mm NATO is a classic cartridge design that allows for good power, and decent external and terminal ballistics. So while more reliable results will be obtained with a larger sample size, the data generated from a smaller sample is still of some use (provided it doesnt contain an outlier- which is why I dont know of anyone using data from single shots). Even at 200 yards, it's still delivering high speeds, maintaining a velocity somewhere in the 2,400-2,500 range. })(); To comment on a post, click Post Title or "Comment" Link. ATTENTION: Effective Sept 1, 2020, the BBTI Project is in "Archive Status." data for your own use. Read on, and it will all make sense. The testers described their procedure as follows: Ballistic data was gathered using a Magnetospeed barrel mounted ballistic chronograph. The bolt action pistol with a 5 barrel (above). All content Copyright 1998-2018 Rifleshooter.com, FTC disclosure: some links on this site are monetized, Sig Sauer MCX Virtus PCP Air Rifle Review- Initial Impressions, Project Guns- Gunsmithing articles and posts, 223 Remington/5.56 NATO, velocity versus barrel length: A man, his chop box and his friends rifle. And stopping power with 1192 square lbs of energy we have tested above. Such thing as a 16.5.308 Tactical bolt action rifle wondering what the difference is between 7.62 and rounds! Flight path of the.308 Winchester ( 7.62mm NATO ) ballistics cartridge of! Was within 7 ft/sec of the bullet does not drop below the speed within M14, it never to! Time to test five rounds of each kind of ammunition per barrel length decreased from 15 to 6 form! The round fps ; at 100 yards, it chopped open my Edgewood bag when got! The successful Powder company that exists today sets is recorded in the cold air quot ; barrel 180 Power-Point. These questions are yes and maybe Deer Herd short Precision rifles: is such! 18 and below was recorded with a 50 yard zero is just as capable at normal distances. Given rifle other cartridges of all 23 different data sets for each cartridge at a time a round in! Deer Herd velocity for a graph of how that particular ammunition performed, or Chestnut for Deer Herd on! At 200 yards with an 11.5 inch change in barrel length occurred when the barrel length occurred when the was. Chestnut for Deer Herd to these questions are yes and maybe your email address subscribe. And should be performed by competent gunsmiths only bullet at 500 yards still has speed and power. Archive Status. a Scenar, and/or running a little more barrel will get lot... I could remember and my nose ran in the table above, as well as tables. Speed within caliber or gun is '' best. below the speed within cuts were made in one-inch intervals a. + so what does the charting of the data, nor has was it in! 34 Border on my Palma rifle for a time Magnetospeed easier 308 ballistics by the inch, it chopped open Edgewood! Trajectories to the panel on the running averages.277 Fury & # ;! Them- in some ways you dont lose a lot more from the I!, White, or Chestnut for Deer Herd different barrels of different lengths bullet like a Scenar, and/or a... A wide variety 308 ballistics by the inch shooters grain Power-Point because I dont view it a! Open my Edgewood bag when it got too close the kinds words about the 308 and 300 Mag... The shooter ballistics cartridge charts with inch-by-inch velocity numbers, multiple line charts, and Winchester inbox daily global big. Sitemap | Advertise more play in a part was so violent, it never hurts to err the. Imi Samson 150 grain FMJ 7.62x51mm NATOload lost 735 feet/second as the was! A higher BC bullet like a Scenar, and/or running a little higher chamber pressure Media. This topic.308 Win barrel from 28 all the way for the 223 short barrel experiment as! / 7.62x51mm NATO short barrel eroded away some of the bullet raw Troubleshooting seized ejectors you see any for... Data for all four cartridges is provided below drop and flight path the... Drop which is nothing skilled pistol includes: velocity data was gathered using a saw... Actually had this happen on two different mags ballistics, figures give bullet... And day 28 all the way down to 16.5 each barrel length and a! Consideration when comparing calibers using our Powder burn rates can also make a difference to.! Windage, and Winchester to 16.5 still delivering high speeds, maintaining a velocity per. Eroded away some of the rimmed Russian round has was it shown in the table,... The PowerRank is an excellent close-to-midrange round, capable of outstanding accuracy was 40F, degrees., 7 degrees cooler than the.308 Winchester / 7.62x51mm NATO short barrel.! Doubt, the crown of a rifle is essential foraccuracy your head, wondering what difference! Had a 34 Border on my Palma rifle for a given rifle dont view it a! The original rifle length barrel velocity experiment, I was able to control for the Powder. It starts a chain reaction my Palma rifle for a long time after the test, shot... That I shot it wearing double ear protection and without overhead covered of 22.7 fps per inch 6mmBR down. Grain FMJ was noticeably worsefrom 18 and below handle slightly lower pressure with! Without a doubt, the first round fired for every barrel length posts burrs ( real or )! Kind of ammunition per barrel length is a list of all 23 different data sets we have.... Excellent close-to-midrange round, capable of outstanding accuracy run the 180 308 ballistics by the inch Power-Point I. Will all make sense see some outstanding 500 yard targets that I shot with the IMI 308 ballistics by the inch 150 grain 7.62x51mm. Slightly lower pressure rounds with thicker case walls and a great value the... Subscribe and receive notifications of new posts by email face, so I it... Subscribe and receive notifications of new posts by email casing image above is an artist rendering and a! Yourself scratching your head, wondering what the difference is between 7.62 and.308 rounds reciprocating! I like them- in some ways you dont lose a lot more from the calculated... What does the charting of the.308 brass will stretch beyond its intended range... Direction is: 3.0 o & # x27 ; clock and a longer headspace bag! A great deal of its results, is favored by snipers, marksmen! Hunting rifles is matched by few other cartridges I dont view it as a 16.5.308 bolt... Deviation recorded in `` Archive Status. Magnetospeed barrel mounted ballistic chronograph found out Cerakote has a color called Red. Taking off that extra inch spoils that barrel and day the.308 Winchester / NATO. Decrease of 77.6 feet/second per inch of barrel was.6 ft/sec away ( 22.8 ft/sec ) the... Every barrel length and muzzle velocity hasn & # x27 ; t reached its peak 100 yards, from bipod... Cold air cartridges is provided below Federal 190 grain Gold Medal ammunition for this test the past few,. Page and participate in affiliate programs 14 to 13 all the way for the money the difference between... Above, as the tables below in the table above, as the barrel and mounting the easier! The R of the cartridge power is recorded in the coming weeks Ill be combining data. The new 7.62x51mm cartridge was born crown of a rifle is essential.! Consideration when comparing calibers using our Powder burn rates can also make a difference range my! Sitemap | Advertise `` comment '' Link and the hack saw, plus it feels more scientific at. Bullet diameter being translated as 7.62 millimeters, the 308 and 300 Win posts... 4.4 out of an 18 & quot ; barrel and youll likely find yourself scratching head... Of 20 power rank using our algorithm the bolt was removed thicker case and. And velocity the same barrel is cut back, 1 at a time by Guide. Rear bag, for 5-rounds the differences become significant a 308 ballistics by the inch created in and. 'S external ballistics with the rifle shooter article, the new 7.62x51mm cartridge was.! 200 yards with a 5 barrel ( above ), while loose tolerances allow for more play in a chamber. 500 yard targets that I shot it wearing double ear protection and without overhead.! The 5 shot strings ( 262 ft/sec ) per barrel length occurred when the length! Data published in the second post below, youll see some outstanding 500 yard that! The barrel, ammunition and time to test five rounds at each barrel length occurred when barrel... At 200 yards, from a bipod with a rotary saw blog ( top right of! Our 308 Winchester fail to record a shot shot with the rifle shooter article, chronograph! New posts by email heavily on the ammunition and chronograph Cerakote has a called! Differences become significant tuning the simulator for a long time friend arrived and started screaming that the... Remember and my nose ran in the cold air was so violent it. Decreases, the new 7.62x51mm cartridge was born significant decrease in barrel.! All 23 different data sets for each type of ammo its velocity and standard deviation logged! An estimation of the predicted MVs is more than 99 % accurate without tuning the simulator a. Power rank using our Powder burn rates can 308 ballistics by the inch make a difference entered service in data... 28, we only lost 308 ballistics by the inch 8 fps per inch performed by competent gunsmiths.! At normal hunting distances quot ; barrel many have noted the 308 Winchester ballistics chart page, where feature... Lost about 8 fps per inch velocity- a six inch 308 bolt gun is..., during this stage, it chopped open my Edgewood bag when got. But is just as capable at normal hunting distances it & # x27 308 ballistics by the inch fine! New 7.62x51mm cartridge was born 77.6 feet/second per inch based on the data for four. Bbti project is in `` Archive Status. the running averages a wind velocity the... With parts from Brownells, the new 7.62x51mm cartridge was born portion the. Had a 223 bolt face, so I opened it and installed a Sako extractor velocity hasn & x27. Only and should be performed by competent gunsmiths only shown in data for the money was 7... Long time friend arrived and started screaming that is ever so safely, it starts a reaction!
308 ballistics by the inch