![]() ![]() 223 bullet will have a much better ballistic coefficient, and thus will retain its velocity better. (180 ft/lbs versus 130 ft/lbs in example above).Īlso, the sharply-pointed. 223 round is nearly twice as massive (weight), and this will strike with a lot more kinetic energy, even at the exact same velocity. 223 bullet moving at the same muzzle velocity. (just barely still subsonic) is NOT like a 75-grain boat-tail. 22LR bullet initially moving at 1040 f.p.s. After that, if you miss, you have the choice to either slink away quietly or cock your gun and hope the bad guys didn't hear you do that or see your arm movement. For tactical applications, against bad guys with their own guns, you'd just have to accept that you only get one fully suppressed subsonic shot from deep concealment. For plinking at the range, it's no big deal to cock the rifle in between shots. For most hunting or pest control applications, you only need one shot most of the time. They probably will not cycle the action as a semi-auto, but if you need more than one quiet shot, you can rack the charging handle manually. But don't pretty much all AR pattern rifles made in the last 15 years come with 1:9 or faster twist? And even the bolt-action guns tend to be 1:10, which is probably fast enough to stabilize up to 62 grain subsonics, and maybe the 75 or 77-grain boat-tails too. ![]() The heavier bullet loads, combined with slower speeds (the bullet spins at lower RPM's) means you need a fast twist barrel. 38 special standard-pressure load (either 158 grain or 125 grain). The heavier-bullet loadings like the 75-grainers will generate 200 foot-pounds of energy, making them in the same power class as a. bullet at 1010 fps) Allegiance Ammunition (100 grain at 975 fps) Custom Reloads of Dallas (55 gr. Several smaller ammo companies load subsonic rounds for the. 223 / 5.56mm ammo through their AR's and their bolt-action weapons that serve has host guns for their 5.56mm suppressors? Why don't people seem to be interested in shooting SUBSONIC. ![]()
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