Ron, where were you a LEO carrying a P220? The .45 has benefited from modern manufacturing processes and improved bullet technology. The traditional arguments still prevail in some ways. During the late 19th century and early 20th century, the U.S. Cavalry began trials to replace their sidearm arsenal of issued .45 Colt Single Action Army (SAA) in favor of the more modern and versatile double-action revolver in .45 Colt. This is because of the higher powers achievable with .45 Super, and +P loads. To equal the impact of a .45 ACP bullet, the 1-pound weight needs a velocity of 27.1 fps and must be dropped from a height of 11.4 feet. AR15.COM is the world’s largest firearm community and is a gathering place for firearm enthusiasts of all types. The larger guns are easier to aim due to a longer sight radius, but they suffer from a weight penalty and low capacity for their size. 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 ». The cartridge was designed by John Browning for Colt, but the most influential person in selecting the cartridge was Army Ordnance member Gen. John T. Thompson. In a remarkable display of performance, the Lehigh Defense ( www.lehighdefense.com ) .120gr load had a variance of only 29fps across the average velocities from all four barrels! The weapon has the same capacity as the 1911 with seven or eight rounds onboard, but is less than half the weight. The .45 ACP is an effective combat pistol cartridge that combines accuracy and stopping power for use against human targets. Boxer: Use. The .45 ACP is an effective combat pistol cartridge that combines accuracy and stopping power for use against human targets. 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. Another area to address is velocity. This experience, and the Thompson–LaGarde Tests of 1904, led the Army and the Cavalry to decide a minimum of .45 caliber was required in a new handgun. I have put hundreds of rounds of multiple weights and shapes through it, without a malfunction. The cartridge headspaces on the mouth of the case at the L3 datum reference. UGH! The other camp I often encounter and debate argues that the .45 ACP offers a profound advantage due to the bullet mass and ‘stopping power’ available, the adage being that one .45 is worth two or three ‘little nines’ in a fight. I love mine and my 357s and 9mms and 10mms and 44s and…….. Joe Your right about the .45 ACP. Bottom line, the .45 ACP is the better self-defense cartridge, and does its best work at standard velocity. good job on the article, Josh. Several US tactical police units still use the .45 pistol round. The .45 ACP is a pussycat in recoil compared to a short barrelled .357, even when shooting .38 Special loads. Before we go much further, we should discuss 9mm vs 45 ballistics, and more importantly, what that information means for you. Because standard pressure .45 ACP rounds fired from handguns and submachine guns are inherently subsonic, it is one of the most powerful pistol calibers available for use in suppressed weapons since subsonic rounds are quieter than supersonic rounds. Out of the box I considered it to be the finest DA/SA pistol I’d fired in the caliber. It is, in my mind, best suited to single-stack carry pistols given the modern pistols like the Shield 45 that can tame it and lose nothing in the process. The results proved interesting to say the least. Our patented recoil system increases accuracy and service lifeПатрон CCI Standart Velocity Ammo, кал. Renewing for my carry license I was able to put Five rounds in a 1″ circle from 7′ as fast as I could pull the trigger, under Five seconds. AR-15 AK-47 Handgun Precision Rifles Armory Training Competitive Shooting General Outdoors Archery Hometown Industry. That being said, I am not openly advocating this as a solution for everyone. To get a picture of the modern .45 ACP's velocity, I contacted several manufacturers and received 33 ammunition offerings to test. Interesting how u clearly named each weapon and it a exact barrel length, except for the 1911. Over time, a series of improved designs were offered, culminating in the adoption in 1911 of the "Cal. Brass: Primer. .45 ACP loads use fast burning powders and for the most part full ignition takes place inside the barrels be they 3.3″ such as the Shield or 5″ such as the M1911 which is what I cut my teeth on in the Marine Corps beginning in 1966. It is dimensionally similar to the .45 ACP round but has a thicker case wall and is loaded to higher pressures, which offers an average 300 feet per second (91 m/s) improvement in muzzle velocity over the .45 ACP. The .45 is a fine caliber for a variety of tasks today. Suppressors reduce the audible "report" by slowing and channeling the high speed gas generated by the burning/expanding gunpowder before it exits the muzzle resulting in a muffled "cough". A test this big is best summed up in graphs and some narration to explain what I found. The cartridge was co-developed by Tom Fergerson and Ace Hindman. DWM, which submitted two Parabellums chambered in .45 ACP, withdrew from testing after the first round of tests, for unspecified reasons.[8]. To check velocity, I set up a Shooting Chrony Beta Master Chronograph 15 feet down range and shot strings of fire from each gun so I could do some fancy math and get average velocities for each gun shooting the 230-grain HST load. 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. The .45 ACP (11.43×23mm) (Automatic Colt Pistol), also known as the .45 Auto by C.I.P. If anybody has a PC Shield in .45 they want to sell contact me cause given the choice of a 9MM Shield and a .45 Shield I’ll take the bigger bullet, going slower… Read more », You talk about the 3.3″ barrel is too short for the 45 ACP, but I carry a S&W Pro Series 1911 and it has a 3″ barrel. Rather than the standard 18,000 psi of the 45 ACP, the +P load will average 21,000 to 22,000 psi. Not Ron, but a great question Old Cowboy. In its non-expanding full metal jacket (FMJ) version, the .45 ACP cartridge has a reputation for effectiveness against human targets because its heavy mass has the capacity to penetrate tissue deeply and damage the central nervous system, and its large 11.5mm diameter creates a more substantial permanent wound channel than other calibers, which can lower blood pressure rapidly if critical organs of the circulatory system are hit. 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, 37,500 psi/259 MPa for 10mm Auto, 40,000 psi/276 MPa for .357 SIG), which due to a low bolt thrust helps extend service life of weapons in which it is used. In the case of the .45 ACP, the new standard cartridge pressure is 21,000 psi (140 MPa) and the SAAMI .45 ACP +P standard is 23,000 psi (160 MPa). If you like your 45s, and more importantly, can hit with it, go for it. What you see is what you get here. 9mm vs 45 ACP Ballistics. And if my life and the life of those I love is in the gun I carry .45 ACP maximum C.I.P. [10] All sizes in millimeters (mm). Other US military cartridges include: tracer M26 (red tip), blank M1921 (rolled crimp, red paper wad), M12 and M15 shot shells, and M9 dummy (holes in case). 45 ACP is very similar, with a 230 grain (gr) lead bullet that travels at an impressive 830 feet per second (fps). or 45 Auto by SAAMI, is a cartridge designed by John Browning in 1904, for use in his prototype Colt semi-automatic .45 pistol and eventually the M1911 pistol adopted by the United States Army in 1911. The Shield loses in no areas in my mind. I wonder why the Blazer 230 grain aluminum and brass cased ammo is so slow? Colt had been working with Browning on a .41 caliber cartridge in 1904, and in 1905, when the Cavalry asked for a .45 caliber equivalent, Colt modified the pistol design to fire an enlarged version of the prototype .41 round. The small size (comparable to a Glock 43 Handgun) combined with no loss of ballistic efficiency make it a potent choice for fans of the .45 ACP. I’ve chronied 230 gr. I really don’t care if is heavy. After the example of the Cavalry, the Army in turn had fielded versions of double-action revolvers in .38 Long Colt. 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 ». All the Buffalo Bore Ammunition ( www.buffalobore.com ) loads performed with little to no variance across any barrel length. By 1906, bids from six makers were submitted, among them Browning's design, submitted by Colt. 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