9mm vs 40 S&W vs 45 ACP & “Stopping Power” ... Recoil is directly related to the muzzle energy of the round being used. Typical Muzzle Energy Range: 244-534 ft.lbf.

Muzzle Velocity: 1,090 fps. However, physics will not be denied, and .45 ACP, while slower, is heavier, and will therefore break bones that 9mm would otherwise deflect off of. Stopping Power vs. Muzzle Energy. Because the formula for calculating muzzle energy requires that bullet speed (by far the largest number in the mix) be squared, the power factor is distorted in favor of a … One of the twentieth century’s best-known pistol cartridges, the old.45 Automatic Colt Pistol cartridge originally supplanted the .38 Long Colt cartridge after the Moro uprisings in the Philippines showed a need for better stopping power in the pistol cartridges issued to the US military. A logical argument can be made that accuracy and penetration may outweigh bullet size and muzzle velocity in certain situations.
They have faster muzzle velocity, muzzle energy and a faster velocity. The only ballistic attribute that has anything to do with “stopping power” is muzzle energy, since the amount of it has to do with the relative ability a bullet has to pulverize flesh and bone provided an efficient transfer of said energy. A more important issue for a home defense gun might be keeping the bullet from killing your next door neighbor, as he's watching TV.

Because of the faster velocity, 10mm is going to give you better long-distance shooting. Muzzle Energy: 348 ft/lbs. It’s not hard to see why it’s not only the favored service pistol around the world, but also one of the most popular calibers time and time again.. 9mm vs .40 vs .45: Which Chambering Has More Stopping Power? Note the size of this Federal 230-grain, .45 ACP HST +P bullet, which dropped a charging hog instantly. Chuck Hawks shares important information about handgun stopping power in this handy condensed version of his popular chart.

9mm vs .40 vs .45: Which Chambering Has More Stopping Power? Many gun people will even use the term interchangeably with “stopping power.” But is muzzle energy important? Relative Stopping Power, for example, totally disregards the effects of kinetic energy, sectional density, and bullet expansion on killing power. Many gun people will even use the term interchangeably with “stopping power.” Without consideration of factors such as aerodynamics and gravity for the sake of comparison, muzzle energy is used as a rough indication of the destructive potential of a given firearm or cartridge. The term handgun “stopping power” generally relates various opinions about the ability of handguns to create ballistic wounds sufficient to incapacitate a target. Taking it a step up, the 9mm bullet weighs about 7.5 grams and leaves the muzzle at about 800 mph for muzzle energy of 467 joules, or about twice as much as a well hit hockey puck. While the.380 might just look like the 9mm’s shorter cousin, but in actuality, these two rounds function quite differently. Looking at power factor favors bullets that are heavy, even if slow. Let’s see the factors that you listed: 1. Furthermore, the muzzle energy of a .357 Magnum round averages out to 530 ft-lb, while a .45 Colt (LC Long Colt) round averages out to about 500 ft-lb. Muzzle energy is often used to rate the lethality of certain loads. One of the twentieth century’s best-known pistol cartridges, the old.45 Automatic Colt Pistol cartridge originally supplanted the .38 Long Colt cartridge after the Moro uprisings in the Philippines showed a need for better stopping power in the pistol cartridges issued to the US military. Because of the faster velocity, 10mm is going to give you better long-distance shooting. RSP was developed to compare the stopping power of early 20th Century handgun cartridges. Using a balistics chart for some ammo Remington makes: 357 Magnum: 125 gr @ 1,450 ft/sec = 583 ft-lbs of energy 45 Auto: 230 gr @ 835 ft/sec = 356 ft-lbs of energy Based on muzzle energy the 357 is the clear winner.-----Yet I've read about power factor, so let's look at that:

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