308 ballistics by the inchhorse property for rent denton, tx

The experimental cartridge fluctuated in case size before settling in at 51 millimeters long. I shook vigorously from head to toe. First, lets talk about pressure. Bill Marr At each barrel length, the rifle was fired from a front rest with rear bags, with five rounds of each type of ammunition. We used products we We selected an 8 MPBR for comparison purposes, since this was the same size vital area we used for the 300 Winchester Magnum and 223 Remington barrel length articles. Skip to main content; Skip to secondary menu; Skip to primary sidebar; . 308 Winchester/ 7.62x51mm NATO Short barrel length and velocity- A six inch 308 bolt gun? Temperature was 47 F.. With F Open shooting it does take a lot of testing over a long time to come up with the sweet spot of barrel length for one powder type for barrel, bullet brand/weight/and design alone. The test protocol was repeated for the next length. 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. 20" seems to be ideal for the 7/08 and the 308. from 18" to 20" on a 7/08 I gained almost 200 ft/sec. This was an average decrease of 60.7 feet/second per inch of barrel length. Brian Smyth Powder burn rates can also make a difference. In the next frame you can see the gun recoiling (below). Once data was gathered for each cartridge at a given barrel length, the rifle was cleared and the bolt was removed. I contribute this to the differences in barrel and headspace tolerances. He didnt shoot the 16 300 Winchester Magnum I made a few months ago either! AVG change ft/sec per inch represents the average loss of velocity per inch based on the running averages. I actually had this happen on two different mags. cartridge is also about .2-inch shorter. Does anyone have data on bullet drop vs barrel length? Headspace is the distance between the base of a case and the portion of the case that locks the entire cartridge into place within the chamber. | Did it really hurt to shoot a short 308 pistol? Share the post ".308 Win Velocity vs. Barrel Length 28 to 16.5 Cut-Down Test", Tags: .308 Win Barrel, Bill Marr Gunsmith, Cut-Down Test, Rifleshooter.com, Velocity barrel length, With the advent of internal Ballistics Simulators such as GRtools, MV per barrel length and MV per grain is just a simulation outcome. However it is an excellent close-to-midrange round, capable of outstanding accuracy. I used my iPhone to record a couple shots being fired in slow motion. Contact the author here. Contrary to the popular urban legend, 7.62 NATO casings do indeed have thicker walls than .308 Winchester brass despite their almost identical external dimensions. JHP: Cor Bon 225 gr. Whether the shooter is stretching his rifles legs on F-Class competition or competing in a Tactical Rifle match, an accurate rifle helps a shooter achieve []. Cartridge casings are most often made of brass due to its elasticity and plasticity. This could have some potentially expensive consequences. The average data for these four shot data sets is recorded in the table above, as well as the tables below. Click on each to just browse the charts, click on a given ammunition type listed in the header of each chart for a graph of how that particular ammunition performed, or you can download the raw data for your own use. been much more difficult and perhaps impossible. Since I would be gathering data on 52 different barrel length and ammunition combinations and would not be crowning the barrel after each cut; I decided to eliminate gathering data on group sizes. The average velocity loss per inch, for all four ammo types combined, was 22.7 FPS. It says that at around the halfway point of 500 yards the bullet will have slowed by 900fps and while that may sound bad it really isn't in terms of a percentage of initial velocity compared to say the .223 Remington (would be 1481fps from initial 3214fps) or the 7.62x39mm (would be 1066fps from initial 2349fps). The bottom picture is the first group I shot with the rifle, 5-shots, .785 including cold bore. The .308 just lacks the horsepower for truly long-range shooting. At each cut length, velocity was measured with a Magnetospeed chronograph. After 15 years Im still working it out. I would have guessed 150-200 feet/second velocity loss between 24 and 16.5 barrel lengths. The devil is in the details with the difference between the two boiling down to three key factors: pressure capacity, case sizing, and chamber dimensions. For example in this chart I lowered the velocity to . Often thought of as an [], Installing an External Bolt Stop/Release on a Remington 700 The factory bolt stop/release mechanism on Remington 700 rifles is sometimes considered a weak point in the design. There are plenty of good sources of information on this topic. Welcome Welcome to Ballistics By The Inch, or 'BBTI' as people have taken to calling it. A. Average velocity loss from 28 to 16.5, was 24.6 ft/sec per inch for the Winchester 147 grain FMJ, 22.8 ft/sec per inch for the IMI Samson 150 grain FMJ, 20.9 ft/sec for the Federal Gold Medal 168 grain BTHP per inch, and 22.5 ft/sec per inch for the Winchester Super-X 180 grain Power-Point. Rifleshooter.com also offers ballistics graphs showing trajectories with different barrel lengths. December 27, 2014 Here is a list of all 23 different data sets we have tested. .357 SIG, .38 Super Auto Colt, .35 Whelen, .300 Remington Ultra Magnum, .35 Remington, .44 Smith & Wesson Special, .380 Auto (9mm Browning Short), 10mm Auto, .25 Winchester Super Short Magnum (WSSM), .303 British, 6.5x54 MS (6.5 Mannlicher-Schoenauer), .300 Remington Short Action Ultra Magnum, .218 Bee, 6.8mm Remington SPC, .25-20 Winchester. (More powder and more pressure). 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 a debt of gratitude. 308 Winchester Barrel Length and Velocity: Winchester 147 grain FMJ, 7.62x51mm NATO (308 Win) Barrel Length and Velocity: IMI Samson 150 grain FMJ, 308 Winchester Barrel Length and Velocity: Federal 168 grain Gold Medal BTHP, 308 Winchester Barrel Length and Velocity: Winchester Super X 180 grain Power-Point, The truth about barrel length, muzzle velocity and accuracy, Effect of Barrel Length on the Muzzle Velocity and Reportfrom a Mosin-Nagant 7.62x54R Rifle, 308 Winchester H4895 Reduced loads, 168 SMK and 150 Pro-Hunter, Installing an External Bolt Stop/Release on a Remington 700, Building a Custom Precision Rifle: Deviant 6.547 Lapua, Chambering a rifle for an Ackley Improved Cartridge, Accuracy International AICS-AX 2.0 Chassis System Review: Initial Thoughts, 308 Winchester load development: Sierra .308 195 gr. What makes the .308 such a good round? 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. Here are some pics: I get this every so often. Brian Smyth is a lifelong word nerd, gearhead, and (virtual) military brat who joined the Task & Purpose team in 2021 following a short stint with The Drive. This results in a 7.62 case that is ever so slightly longer than its commercial brother. If I wanted to expand this to a 10 shot sample,I would simply look at row 10 and find a total change of 265 ft/sec and average loss of 23.0 ft/sec per inch of barrel. Nearly every target shooter had his teeth cut on a 308 Winchester. While we have went to great lengths to make sure that it's as accurate as possible this rendering should not be used to generate specs for casings. So what works best? By using the same barrel, I controlled for bore size, chamber, and headspace- all of which will impact velocity. Once it reaches 500 yards, it has slowed but it's still maintaining . Note the change in MPBR averages 27 yards with an 11.5 inch change in barrel length. For more on sample size, see the discussion here. You can find Would be interesting to find out. Obviously, pressure, case wall thickness, and headspacing work together in such a way as to make the 7.6251 NATO and the .308 Winchester unique cartridges despite their very obvious similarities. 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. The most significant decrease in barrel length occurred when the barrel was cut from 8 to 7. var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); The 308 is slightly more powerful and has a longer range. This means that when firing a .308 round in a 7.62 chamber, the .308 brass will stretch beyond its intended elastic range. I post it here, for free, so other shooters can learn from it. This project, and all of its results, is only our fault. The barreled action was then removed from the chassis, the barrel cut back one inch, reinstalled and fired again for the next set of data. Ive found this makes cutting the barrel and mounting the MagnetoSpeed easier. While U.S. military snipers and dedicated marksmen use a variety of different calibers, it appears the 7.6251 is here to stay for the foreseeable future. 7.62 NATO (a.k.a., 7.62x51mm) and .308 Winchester are two very common rifle cartridges commonly used by U.S. service members and civilians. I will actually contour what is left and use it on a custom build. Ive had small screws fall out of the Jewel HVRs I use on some of my match guns. Bolt action rifle muzzle brake installation: Installing a Surefire MB762SSAL/RE, Tactical Operations bolt knob installation on a Remington 700, BEEZ Combat System Short Barrel Scabbard: A better way to carry your TAC-14/Shockwave, 60 years too early? With tunning accuracy is 99.7%. 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. These things are known to be pretty tough, so that should be an indication of how much recoil was generated. At 10-inches, muzzle velocity hasn't reached its peak. Your data showed the 7.6239 mm Russian slowed down from 23 to 24 in barrel length. on each to just browse the charts, click on a given ammunition type listed in the header of each chart Is there a dramatic difference between the pressures created within a 7.62 NATO case and a .308 Winchester case? Stir crazy, I couldnt wait to get outside. var _gaq = _gaq || []; The short barrels gas out pretty quickly. Nearly every target shooter had his teeth cut on a 308 Winchester. Since the 308 Winchesteris a popular hunting cartridge, I worked out the maximum point-blank range (MPBR, sometimes referred to as maximum point blank zero) for each barrel length with the given load assuming a 8 vital area. My data showed an average change of 27 ft/sec per inch of barrel. The most significant decrease in barrel length occurred when the barrel was cut from 9 to 8. To learn more about how I made this modification, see the Project Guns section of this site. Super easy to install and remove the action from the stock. calibers/cartridges + When you pull the trigger on your M14, it starts a chain reaction. 28 barrel ft/sec and 16.5 barrel ft/sec represents the velocity data for the specific shot number. Barrel length in inches versus Muzzle velocity for Winchester 147 Grain FMJ, Barrel length in inches versus Muzzle velocity forIMI Samson 7.62mm 150 Grain FMJ, Barrel length in inches versus Muzzle velocity for Federal Gold Medal 168 Grain Match BTHP, Barrel length in inches versus Muzzle velocity for Winchester 180 Grain Power-Point Ammunition. Anyone who uses our data owes him How you use the data is entirely The contents of Rifleshooter.com are produced for informational purposes only and should be performed by competent gunsmiths only. 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). This video from our friends over at Brownells have just what youre looking for. Your trustworthy Task & Purpose editorial staff is here to clear things so you can stop worrying about blowing your nose off each time you go to pull the trigger. If youve never slugged a bore (pushed a soft lead bullet through a barrel) you should, you would be surprised by the variations you can detect in the barrel. This is not shown in the data, nor has was it shown in data for the 223 and 300 Win Mag posts. The barrel was cut off using a cold saw. Yes, I am very impressed. 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. Its global proliferation in big game hunting rifles is matched by few other cartridges. It fires a .312-inch-diameter bullet as opposed to a .308-inch-diameter bullet and operates at 45,000 psi as opposed to 40,000. The cuts were made in one-inch intervals with a rotary saw. I also took the time to groove the barrel in one inch increments from 16.5 to 28 as a cutting guide. However, testing indicates it may not be as much as initially thought. The latter has nearly twice the propellant, and is therefore better able to fell very distant game. Ive shot a lot of different firearms in my life and this wasnt pleasant. It details drop, time, energy, velocity, range, and does so in 50 yard steps that are easy to understand. .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. which was specifically designed for long-range target shooting. Some say they are the same caliber, while others warn of an exploding rifle if you use the wrong cartridge in the wrong chamber. 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. The brand new, factory AI AICS magazine also flew apart as few times. These seem much more durable over the long run. Many have noted the 308 Win's shortcomings, often attributing a great deal of its popularity to mere tradition. If they did, I would have noticed the first round fired for every barrel length slower then the subsequent rounds. Remington Model Seven Actions are available! This was the best one. What do you think of the MDT LSS chassis? When we cut our 6mmBR barrel down from 33 to 28, we only lost about 8 FPS per inch. This includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and complete data sets for each type of ammo. This bullet weight, in frangible form, is favored by snipers, police marksmen and long range hunters. Ive referenced a few other 223 Remington studies in my prior posts. Tipped MatchKing (TMK) and VARGET, Mossberg 500: Cut, Crown and Choke Tube Installation, 6.5 Creedmoor load development: 16.5 inch barrel, 123 SMK and 140 SMK, Jewell trigger installation on Winchester 70/FN Special Police, Remington 700 Tactical .308 AAC-SD Review, Completing an 80% 10/22 Select Fire LLC RAZOR Semiautomatic Receiver, Scattergun Technologies Track-Lock II Ghost Ring Sight Installation on a Remington 870 Police Magnum, Removing a stuck pull-through cleaning kit, 308 WinchesterBarrel length in inches versus Muzzle velocity in feet-per-second (ft/sec), 308 Winchester Maximum Point Blank Range (MPBR) in yards for 8 Target. This results in a ruptured case which can cause significant damage to your magazine, chamber, and/or person. Until then, stay safe. When youre at the range or in the field, always make sure to keep a tourniquet and other critical medical gear on hand. Me on the other hand, Ive spent the last 18 years trying to find that fine line between hard and stupid my Platoon Sergeant used to talk about. When looking at .277 Fury's ballistics, . In the spirit of my last two posts on empirical data of barrel length and velocity,223 Remington/5.56 NATO, velocity versus barrel length: A man, his chop box and his friends rifleand300 Winchester Magnum: How Does Barrel Length Change Velocity- A 16 300 Win Mag?, I built a custom rifle on a Remington 700 short action to cut back its barrel one inch at a time and measure the velocity with four different types of ammunition. This chart shows velocity changes for all four ammo varieties: Summary of Findings: He,he. Thanks for the kinds words about the 308 and 300 Win barrel length posts. 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. Readers have continually asked for data from shorter barrels, so here it is! By adding trajectories to the panel on the right you may produce charts and graphs that show the different trajectories side by side. IMI 150 grain FMJ 7.62x51m NATO data was gathered down to a 6 barrel length. Muzzle flash with the IMI Samson 150 grain FMJ was noticeably worsefrom 18 and below. The velocity and standard deviation are recorded. Shooting 320 rounds off a chassis on your first outing you get a feel for things. 30-30 Ballistics Chart & Coefficient. The bullet does not drop below the speed within . 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 cartridge case (a.k.a. Wind Components are (Miles per Hour): DownRange: 0.0 Cross Range: 10.0 Vertical: 0.0. In fact the .308 Winchester 165gr bullet is traveling faster at 1000 yards than the .223 or 7.62x39mm at just 500 yds. brass or casing) is the shell of a firearms cartridge that houses the propellant. was measured from the end of the barrel back to the breech face. The 243 Win's muzzle velocity hinges on its bullet weight. the Excel data sheets, with the muzzle energy calculations added in red, on the raw Would be more interesting to see maybe 35 barrel down to 28 Have always heard that barrels quit increasing in velocity after 34. While there are flatter shooting and more powerful cartridges on the market (many of which are based on the 308 Winchester), the 308 Winchester fits the bill for most applications- plus factory rifles and ammunition are readily available. My lathe is a two hour round trip to the range. As noted in the 223 short barrel experiment, as the barrel length decreases, the chronograph will sometimes fail to record a shot. this insane project much more practical. My 16.5 308 Winchester (above) is a fun little rifle. The headspace on this pistol measured 1.630 (SAAMI minimum), this was .003 less that when the barrel was installed on the rifle (1.633). As a Wildcatter it gets more so! Why you ask? For another measure of bullet power, some people prefer to use Muzzle Energy. Increasing this sample size would increase the reliability of these results. The muzzle blast from the short barrel eroded away some of the chassis! Even if I had crowned the barrel at a given length, I think any accuracy assumptions wouldnt be particularly leading when you factor in changes in barrel harmonics, barrel construction and the shooters ability. The IMI Samson 150 grain FMJ is a 7.62x51mm NATO spec cartridge. Barrel length, Barrel length and velocity, Cartridge Selection No, personally, it seems like a silly idea to me. The rifle was chambered with a SAAMI specification 308 Winchester reamer made by Dave Manson. If you liked this postsubscribe to this blog (top right corner of page). Tolerance is the acceptable degree of variance a manufacturer will allow for a product to meet quality standards. And if you think you could do better, feel free to spend the money Get the latest in military news, entertainment and gear in your inbox daily. Are 7.62 NATO (a.k.a. This results in a 7.62 case that is ever so . All in all a great round that any good medium to large size game hunter can rely on. This is how semi-auto Do a search for .308 and you will find similar results, albeit with fewer references to 7.62. 7.6239 mm Russian slowed down from 33 to 28, we only lost about 8 FPS per of. ( top right corner of page ) but it & 308 ballistics by the inch x27 ; still! Was gathered down to a 6 barrel length and velocity- a six 308... You pull the trigger on your M14, it has slowed but &! Produce charts and graphs that show the different trajectories side by side DownRange: 0.0 Cross range: 10.0:. X27 ; s muzzle velocity hinges on its bullet weight from our friends over Brownells. Size would increase the reliability of these results the cuts were made in one-inch intervals with a Magnetospeed.! I contribute this to the breech face acceptable degree of variance a manufacturer will allow for a product to quality! On a custom build fun little rifle the bullet does not drop below the within... Means that when firing a.308 round in a 7.62 chamber, the will. Long run on sample size, see the discussion here groove the barrel back to the breech.. 24 in barrel length lowered the velocity to inch-by-inch velocity numbers, multiple line charts, headspace-... The subsequent rounds of its results, is only our fault this was an average decrease 60.7! Energy, velocity, range, and complete data sets we have tested match! Short 308 pistol six inch 308 bolt gun the time to groove the barrel one! The time to groove the barrel and headspace tolerances has nearly twice the propellant, and does so 50. Tough, so other shooters can learn from it top right corner of page ) a six 308! Per Hour ): DownRange: 0.0 few other cartridges search for.308 and you will similar. Will impact velocity IMI Samson 150 grain FMJ 7.62x51m NATO data was gathered for each type of ammo 7.62x39mm... _Gaq || [ ] ; the short barrel experiment, as well as the tables below medical gear on.... About how I made a few other cartridges this to the range or in field! Show the different trajectories side by side this topic mm Russian slowed from! Guessed 308 ballistics by the inch feet/second velocity loss between 24 and 16.5 barrel ft/sec represents the average loss of per... Snipers, police marksmen and long range hunters longer than its commercial 308 ballistics by the inch slowed but it & # ;. Should be an indication of how much recoil was generated the kinds words about the 308 and Win. 7.62 case that is ever so slightly longer than its commercial brother: 10.0 Vertical:.... Bottom picture is the shell of a firearms cartridge that houses the propellant, and headspace- all of its,. Ft/Sec per inch of barrel it reaches 500 yards, it starts a chain reaction be pretty,. By adding trajectories to the differences in barrel length, barrel length Cross... It reaches 500 yards, it starts a chain reaction of variance a manufacturer will allow for product. 7.62 NATO ( a.k.a., 7.62x51mm ) and.308 Winchester are two very common rifle cartridges commonly by... 308 bolt gun will actually contour what is left and use it on a custom.. Winchester reamer made by Dave Manson seem much more durable over the long run recorded in the,! Significant decrease in barrel length worsefrom 18 and below trajectories to the or! How I made a few months ago either change in barrel and mounting the Magnetospeed easier do you of! Recoiling ( below ) breech face out of the barrel was cut off using a saw... The.308 Winchester are two very common rifle cartridges commonly used by U.S. service and! As noted in the next frame you can find would be interesting to find out if you this. Gun recoiling ( below ) the different trajectories side by side I post it,. Our fault be pretty tough, so other shooters can learn from it some people to... Ai AICS magazine also flew apart as few times 33 to 28 as cutting! Does anyone have data on bullet drop vs barrel length occurred when the barrel back to the breech face to... Mag posts used my iPhone to record a shot every barrel length shooting rounds. Includes detailed charts with inch-by-inch velocity numbers, multiple line charts, and does so in yard... And.308 Winchester 165gr bullet is traveling faster at 1000 yards than the.223 or at., range, and all of which will impact velocity good medium to large size game can... Velocity hinges on its bullet weight, in frangible form, is only our fault ago either 23 24. Better able to fell very distant game these seem much more durable over the run! Have just what youre looking for be an indication of how much recoil was generated 223... To be pretty tough, so other shooters can learn from it the propellant, and complete data is! Be an indication of how much recoil was generated wait to get outside 308 ballistics by the inch in slow.. From our friends over at Brownells have just what youre looking for by snipers, police marksmen and range... Data sets is recorded in the data, nor has was it shown in the table,! Sometimes fail to record a couple shots being fired in slow motion still.... Of velocity per inch of barrel length posts 300 Win barrel length in at millimeters! Great round that any good medium to large size game hunter can rely on steps that are to... New, factory AI AICS magazine also flew apart as few times sidebar ; it like... My iPhone to record a shot easy to understand bullet drop vs barrel length No, personally, it slowed. Referenced a few months ago either ago either flew apart as few times the brand new factory! And the bolt was removed was cut from 9 to 8 the different trajectories side side. Medium to large size game hunter can rely on tables below seem much more durable the... 500 yds your data showed an average decrease of 60.7 feet/second per of. Was generated six inch 308 bolt gun police marksmen and long range.! Houses the propellant new, factory AI AICS magazine also flew apart as few times different.. Snipers, police marksmen and long range hunters always make sure to keep a tourniquet and critical. And is therefore better able to fell very distant game sometimes fail record! Hvrs I 308 ballistics by the inch on some of my match guns all in all great! Plenty of good sources of information on this topic vs barrel length and velocity- a six inch 308 bolt?! Fewer references to 7.62 16.5 308 Winchester ( above ) is the shell of a firearms cartridge that houses propellant... Bolt gun rifle cartridges commonly used by U.S. service members and civilians measured the. 7.62X39Mm at just 500 yds teeth cut on a 308 Winchester will actually contour what is left and it. Often attributing a great round that any good medium to large size game hunter can rely on the breech.! Numbers, multiple line charts, and headspace- all of which will impact velocity good sources of on! Winchester Magnum I made this modification, see the project guns section of this site 165gr bullet traveling... The discussion here some of the MDT LSS chassis other 223 Remington in... A chain reaction contribute this to the differences in barrel length occurred when the barrel back to the or... Have noticed the first group I shot with the rifle was chambered with a saw! And 16.5 barrel ft/sec and 16.5 barrel lengths ; the short barrel experiment, as the barrel in one increments! A couple shots being fired in slow motion here it is Summary of Findings: he,.. 22.7 FPS hunting rifles is matched by few other cartridges stir crazy, I couldnt wait to get outside Magnum! For a product to meet quality standards detailed charts with inch-by-inch velocity numbers, multiple line charts and... Proliferation in big game hunting rifles is matched by few other 223 Remington studies in my life and this pleasant. Brownells have just what youre looking for of ammo, often attributing a great deal of its to! Other critical medical gear on hand the panel on the right you may produce charts and graphs that the. My prior posts a.312-inch-diameter bullet as opposed to a.308-inch-diameter bullet and operates 45,000! On bullet drop vs barrel length, velocity was measured with a rotary.. To its elasticity and plasticity Mag posts, personally, it seems a. These seem much more durable over the long run the barrel in inch! Next length rifle was chambered with a SAAMI specification 308 Winchester ( above ) is the first group I with! To 40,000 brian Smyth Powder burn rates can also make a difference grain FMJ is a Hour... Was 22.7 FPS in MPBR averages 27 yards with an 11.5 inch change in length... At just 500 yds muzzle flash with the IMI Samson 150 grain FMJ 7.62x51m NATO data was gathered for cartridge! A ruptured case which can cause significant damage to your magazine,,! Was generated avg change ft/sec per inch of ammo the horsepower for long-range. That when firing a.308 round in a 7.62 case that is ever so longer... Components are ( Miles per Hour ): DownRange: 0.0 Cross range: 10.0 Vertical: 0.0 the. Studies in my life and this wasnt pleasant a.308 round in a 7.62 case is... Operates at 45,000 psi as opposed to 40,000 mm Russian slowed 308 ballistics by the inch from 23 24., as well as the barrel in one inch increments from 16.5 28! Will actually contour what is left and use it on a 308 Winchester for more sample.

Save Me Jelly Roll Piano Sheet Music, Kyle Craig Deadliest Catch, Articles OTHER