SubscribeToday's modern air guns are typically low-powered because of safety concerns and legal restrictions; however, high-powered designs are still used for hunting. These air rifles can propel a pellet beyond 1100 ft/s (330 m/s), approximately the speed of sound and produce a noise similar to a .22 caliber rimfire rifle. Using very light plastic or alloy pellets, many current spring powered .177 pellet guns can break the sound barrier, and one, the Gamo 1250, can reach 1600 fps with these new pellets.At 330 m/s, that same .00033 kg pellet delivers 18 joules, which is much more believable as a fatal shot.
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posted by Cool Papa Bell at 9:29 PM on October 29, 2007