Читать книгу The Gun Digest Book of .22 Rimfire. Rifles·Pistols·Ammunition онлайн

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Very soon after the Stinger was introduced, Winchester began producing a type of hyper-velocity round known as the Xpediter. This load utilized a 29-grain hollow-point bullet with a muzzle velocity of 1,680 ft/sec which gives a energy of 182 ft lbs. Federal followed suit by introducing the Spitfire which employed a 33-grain bullet with a velocity of 1,500 ft/sec and an energy of 165 ft lbs. The Winchester Xpediter was discontinued after being available for a few years, and the current Federal hyper-velocity load is not designated as the Spitfire although the ballistics are unchanged from that round.

Remington entered the competitive field of hypervelocity ammunition with two offerings. The Yellow Jacket features a 33-grain hollow-point bullet at 1,500 ft/sec giving a muzzle energy of 165 ft lbs while the Viper features a 36-grain truncated cone solid-point bullet at 1,410 ft/sec for an energy of 159 ft lbs. Aguila produces one other hyper-velocity round, and it drives a 30-grain bullet at an advertised velocity of 1,750 ft/sec to give 204 ft lbs of energy. However, the energy drops to only 93 ft lbs at a range of 100 yards. Another hyper-velocity round is the CCI Quik-Shok which uses a 32-grain bullet, but the bullet is designed so that it breaks into four pieces on impact. This produces a devastating effect on small varmints although penetration is generally less than with other types of ammunition.