In terms of velocity, the 7.62x25mm begins where the .45 ACP leaves off, at approximately 1,200 feet per second. Due to standard pressure .45 ACP rounds being inherently subsonic when fired from handguns and submachine guns, it is a useful caliber for suppressed weapons to eliminate the sonic boom. I would go so far as to say that in terms of functional lethality, the short 3.3” barrel loses nothing to the longer barrels. Another item that bears out your conclusions is firing a 45 ACP and or loading for a 45 ACP in longer barrels such as an 18 inch rifle barrel. Out of the box I considered it to be the finest DA/SA pistol I’d fired in the caliber. I taught quite a few classes in the Hudson Valley NY area, generally Federal, State and/or Municipal LE Agencies. [19] In 1985, the .45 ACP M1911A1 pistol was replaced by the Beretta M9 9mm pistol as the main sidearm of the U.S. military, although select Special Operations units continue to use the M1911A1 or other .45 ACP pistols. There is also a reduced likelihood of overpenetration, meaning that it is more likely that the projectile will transfer all of its kinetic energy to the intended target, thus more reliably incapacitating them. The results proved interesting to say the least. Call us at (540) 898-9256, If you have questions. It is my opinion that this caliber isn’t going anywhere anytime fast. [2] The round was developed due to a lack of stopping power experienced in the Moro Rebellion using the .38 Long Colt. You may be kidding some folks but not all my guy. I taught marksmanship at the Naval Academy and discovered the .45 has a terrible reputation from people from all over the world, I truly believe it because of the awesome stopping power and recoil. .45 ACP is a very controllable defense round. You are wrong however about the 9mm. J.H.P. This is a video of … With standard (not extended) single-stack magazines, pistols based on the 1911 design commonly hold 8 rounds or less. By Josh Wayner Ron, where were you a LEO carrying a P220? the SAAMI pressure limit for the .45 ACP +P is set at 23,000 psi (158.58 MPa), piezo pressure. This test has given me a very good look at the general performance of this old cartridge and helped me to understand what it is and what it isn’t. Brass: Primer. The Shield, very WAY. maybe the sig has polygonal barrels like the glock…..they seem to give faster readings than traditional barrels. I knew that rifle calibers such as .308 didn’t lose much if anything going from 26” to 13.5”, so imagine my surprise when the exact results came about from my most recent test. It’s always a great match up that clearly defines the legendary stopping power of .45 ACP at shorter ranges, with .357 performing better for penetration at longer distances. If you can’t ‘handle’ the recoil of a short barrel handgun, whether it be a .38, .357, 9mm, .40, or .45, that’s a whole different discussion – in which I don’t think the author set out to… Read more », Mr. Bailey, You are pretty much right on the money. What ballistics aficionados tend to argue is “Stoppng Power” which is the ability of a round to stop your attacker. The ammunition I received ranged from simple ball loads to exotic self-defense rounds that could easily be called art due to the quality of their machining. Basically, if your second, third, 4th, 5th, 6th, 7th, etcetera, shots cannot be on target, the concept of how fast those rounds are… Read more ». Complete 45 ACP ammunition ballistics Chart. The compiled .45 ACP velocity data points are an average of six (6) readings over the Oehler 35P. 543 ft. lbs. The traditional arguments still prevail in some ways. I think this is a berral half short or half long thing. The terminology is generally given as ".45 ACP +P" and sometimes, but not always, appears on the headstamp. Gun writer, Josh Wayner, reveals the results of his extensive .45 ACP velocity trial, putting the classic caliber to the test. These numbers appear a bit low for the 5″ barrel. 50 Round Box. The low muzzle velocity also makes the bullet drop over long ranges, making hits more difficult; however, it is important to note that the vast majority of self-defense situations involving handguns typically occur at close ranges. [8] The Colt pistol was adopted as the Model 1911. .45 Automatic Pistol Ball Cartridge, Model of 1911", a 1.273 in (32.3 mm) long round with a bullet weight of 230 grains (15 g). .45 ACP ('08).45 ACP ('15).45 Colt.45 Super.460 Rowland.223 Rifle Acknowledgements. +P means higher pressure, and the loads are several steps above the norm. Cheaper: To convert an AR-15 to a .45 ACP chambering costs over $700 on top of the purchase of the AR-15. The result from Colt was the Model 1905 and the new .45 ACP cartridge. But I carry a 9MM Shield because of the load out, and the size and weight. I have five 1911s in barrel lengths from the 3″ to 5″ and the S&W is to me the most accurate. The .45 ACP is a pussycat in recoil compared to a short barrelled .357, even when shooting .38 Special loads. Under the direct impingement system the M-16 siphoned off hot, high pressure gunpowder gasses from the barrel. Tracer ammunition for the .45 ACP was manufactured by Frankford Arsenal and by Remington Arms. The Rowland operates at a developer established 40,000 psi (280 MPa) SAAMI and may only be used within a select group of firearms significantly modified for this purpose; the Rowland case is 0.057 inches (1.4 mm) longer specifically to prevent it from being chambered in standard .45 ACP firearms. However, since the proverbial myth of the One Shot Stop round, may seem to have finally died a well-deserved ignoble death, the vitally important concept of follow-up shots comes to the fore! He is an active competition shooter with 14 medals from Camp Perry. Will I carry the dam thing around for the next 20 years on the off chance I might need it. The .45 ACP also operates at a relatively low maximum chamber pressure rating of 21,000 psi (145 MPa) (compared to 35,000 psi/240 MPa for 9mm Parabellum and .40 S&W, 37,500 psi/260 MPa for 10mm Auto, 40,000 psi/280 MPa for .357 SIG), which due to a low bolt thrusthelps extend service life of … This is also why more often than not, a +P load gives better performance in a full size pistol such as the M1911 than… Read more ». Round Nose Full Metal Jacket: Case. In its expanding hollow point form, it is also particularly effective against human targets. 45 ACP Muzzle Velocity. [19] The Super is dimensionally identical to the .45 ACP; however, the cartridge carries a developer established pressure of 28,500 psi (197 MPa) and requires minor modification of firearms for use. The original round that passed the testing fired a 200 grain (13 g) bullet at 900 ft/s (275 m/s), but after a number of rounds of revisions between Winchester Repeating Arms, Frankford Arsenal, and Union Metallic Cartridge, it ended up using a 230 grain (14.9 g) bullet fired at a nominal velocity of 850 ft/s (260 m/s). doubled in size…and since .45 ACP is bigger to start with, it became massive in the end. In the second round of evaluations in 1910, the Colt design passed the extensive testing with no failures, while the Savage design suffered 37 stoppages or parts failures. 45 ACP is very similar, with a 230 grain (gr) lead bullet that travels at an impressive 830 feet per second (fps). A .45 averages about 11.3”-14.3” penetration. It has relatively low muzzle blast and flash, and it produces a stout, but manageable recoil in handguns, made worse in compact models. Why would anyone want a caliber that offers both low capacity and low speed? All the Buffalo Bore Ammunition ( www.buffalobore.com ) loads performed with little to no variance across any barrel length. .45 ACP maximum C.I.P. The standard issue military .45 ACP round has a 230-grain bullet that travels at approximately 830 feet per second when fired from the government issue M1911A1 pistol and approximately 950 feet per second from the M1A1 Thompson submachine gun. The .45 ACP (11.43×23mm) (Automatic Colt Pistol), also known as the .45 Auto by C.I.P. It operates at a relatively low maximum chamber pressure rating of 21,000 psi (145 MPa) (compared to 35,000 psi/241 MPa for 9mm Parabellum and .40 S&W), which due to a low bolt thrust helps extend service life of weapons. If you like your 45s, and more importantly, can hit with it, go for it. 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