Recovery Time The relatively slow 850 foot-per-second velocity of the .45 ACP is not fast enough to cause an expanding-design .45 bullet to consistently and reliably mushroom. This means the speed of the bullet does not reliably produce optimum TSC in the opponent's body. This is why, in turn, JHP .45 ACP rounds are often loaded "hotter" to increase their velocity. Making the bullets move faster increases their velocity, thus increasing their momentum and increasing the chances the bullet will expand when it hits a human being. Because physics is inescapable, there's a trade-off here. The greater the velocity (the "hotter" the cartridge), the greater the recoil, muzzle blast, and muzzle flip. These factors all increase recovery time (the time it takes to get your gun back on target and fire a second shot after you fire the first one). Even with increased velocity producing this greater recovery time, the increase in bullet expansion produced still might not be enough to achieve good TSC and thus good stopping power. 27 www.BulletproofDefenseDVD.com If I shoot a watermelon with a .357 Magnum JHP round, the entire watermelon explodes in a pink mist with the first shot. This explosion is caused by the hydrostatic pressure developed by the .357 Magnum round. If I shoot that watermelon with a .45 ACP, even firing JHP rounds, I can empty the whole clip into the watermelon and it will not explode.
Report - Stopping Power
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