While the .45 ACP went the "heavy and slow" route, the 9mm Luger took the opposite tack by shooting much lighter bullets at a higher velocity. Both cartridges have a long history and were first designed over 100 years ago. 9mm vs .40 vs .45 Debate | Which Is Better for Self-Defense? Plus when the freakos clear out the toilet paper and the ammo, there’s still plenty .40 left for me. Until someone has been in that situation, he just needs to be quiet. The 9mm has too spotty a reputation for me to trust as my normal carry caliber. The only thing a 9mm round is good for is general target practice because the rounds are cheaper. I also traded in my 9mm MP5’s for UMP 45s. Truthfully, all of these calibers are awesome. This, in conjunction with the faster twist rate of 9mm barrels, makes it easier to design bullets for the 9mm that will reliably expand over a broader velocity spectrum. ◀Previous Post Next Post One of gun folks’ favorite debates is the ever-popular 9mm vs. .45 ACP. The current 45 is all steel and pretty heavy. This has been an ongoing debate for more than 100 years. Designed initially for use in the 1911 handgun, the 45 ACP quickly became an American standard. You can carry a lot more 9 mm rounds in the mag, and it is easier to shoot well. No scientific answer here just impressions. bullet compared to 147 gr. Hornady's chief ballistician Dave Emery says there's little difference between them. The 45 ACP as a defensive round is often overshadowed by the capable and higher capacity 9mm round. Though he preferred the.45 ACP over the 9mm, the celebrated gun writer Jeff Cooper still wasn't satisfied with just those two choices. The .45 ACP had an ever so slight advantage when it came to wound channel. Then the target, I just took down, got up and shot me in the back. Practice, physical fitness and awareness is more important than quibbling over ballistic niceties. A 9mm fires bullets with a velocity of between 990 and 1350 feet per second. With boxes of 9mm Luger rounds being 30 to 40% cheaper than .45 ACP ammo, increased range time isn’t going to break your budget; and after all, spending more time on the range does make you a better marksman. Plus when the freakos clear out the toilet paper and the ammo, there’s still plenty .40 left for me. Army officials were recently quoted declaring its stock of 200k-plus semi-auto Sig Sauer M11 and Beretta M9 pistols to be outdated. Specifically, a DW 9mm Guardian and a full size Springfield (or maybe a Kimber). And not just because hearing new opinions and confronting your personal biases leads to personal growth. Designed initially for use in the 1911 handgun, the 45 ACP quickly became an American standard. Bullet Penetration. Penetration between the 9mm and .45 is fairly even, though the 9mm has the slightest edge overall. In a pistol as heavy as a 1911, a 9mm has very little felt recoil. The .45 acp bounced off the helmet at 35 yards while the 9mm penetrated the helmet at an astonishing 125 yards proving that the 9mm with its higher velocity, flatter trajectory and higher capacity (they used a Canadian High Power) that the 9mm was the superior combat pistol and caliber period. When I asked him about that, he replied that the larger-diameter .45 ACP bullet would often cut a scoring line and get the higher value that a 9mm bullet would have barely missed. Hello, I am new to this forum. The more than century-old debate of .45ACP vs 9mm rages on. 45 ACP vs 9mm: A Brief Caliber History. 19 Dec 2020. The .45 acp bounced off the helmet at 35 yards while the 9mm penetrated the helmet at an astonishing 125 yards proving that the 9mm with its higher velocity, flatter trajectory and higher capacity (they used a Canadian High Power) that the 9mm was the superior combat pistol and caliber period. 9mm vs .40 vs .45 Debate | Which Is Better for Self-Defense? Reason: Current 9mm ammunition has more consistent and better barrier penetration than.45 ACP. […] Trying to make a science out of chaos is pointless. Get 12 Issues a year of the country's best firearms writing. primarily large pistol (but also small pistol in some brass), 9 mm NATO, 9×19mm Parabellum +P, 9×19mm 7N21 +P+, 9×19mm 7N31 +P+. Our database marks it as a .65 out of 4. The only other advantage of the 9mm that I can think of is that you can recover and aim your shots quicker with the 45 because it has less twisting torque. The 9mm cartridge was designed by Georg Luger in 1901. In no way is the .45 acp any better. to stop the threat. Pistol / Revolver / Carbine / SMG / Derringer; Cartridge. A review of NYPD shootings over 10 years showed a mean of 15% of shots fired hit the target over that period of time. 5.56, .45 ACP, & 12 ga. are my home defense choices. People think that if you have good placement, you will get the job done. 45 caliber bullets are heavy subsonic bullets. This kind of thing cannot be learned by reading magazine articles or talking to people who think they know what it is like. History shows the victor in any confrontation is always attributed to proper tactic and good maneuvering arising from constant training and discipline and not how big a stick one had. The .45 has a bullet diameter of 11.5 mm (.452 in), a neck diameter of 12.0mm, a base diameter of 12.1 mm, and a rim diameter of 12.2 mm. For me it is just a matter of cost. Fit and finish of a high end 1911 with the capacity of your favorite plastic pistol. I just have to comment, to set the record straight. Responsible for ending friendships, starting fistfights, and countless divorces, this debate will tear your life apart. It has been used by the United States and other militaries since World War I. A 9mm is generally cheaper, has less recoil and higher velocity than a .45 ACP. For others, the debate goes on. < >. There are those who are adamant that .45 caliber is the best, due to its stopping power. A former police ofﬁcer and serviceman with the U.S. Army, Richard A. Mann is one of the most well-respected ﬁrearms authorities writing on the subject today. Why is that? The .45 ACP has a larger diameter than the 9mm and thus can create a bigger hole. Here’s the thing: There’s no definitive way to prove which cartridge is better. I have a different take. The Ballistics of the Calibers Today’s standard issue .45 ACP projectile travels at around 830 feet per second while the typical 9mm travels in the vicinity of 1200 feet per second. To approximately 0.35 to 0.72 ” twice the rotational velocity of one who... Absorbs about 40 % and 50 % less than a.45 averages about 11.3 ” ”! 24.5 ” and the highest was 25 % in 1998 357 mag/357 Sig ballistics March issue... 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