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

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Remington ammunition has featured Kleanbore priming for many years as shown on these boxes of 22 LR cartridges from the 1950s.

Hyper-Velocity 22 Ammunition

Over the many years in which it has been produced, the 22 LR cartridge has undergone several changes. Most of these involved minor changes in velocity that resulted from the use of different powders or bullets of slightly different weight or shape. However, a radical departure from the norm occurred in 1977 when CCI introduced a round known as the Stinger. The new round utilized a 32-grain bullet that was driven by a heavier charge of powder that had a slower burning rate than the powder ordinarily used in 22 LR ammunition. To accommodate the larger powder charge, the case of the Stinger was made approximately one-tenth of an inch longer than the normal 22 LR case. The result was a round that produced a muzzle velocity of 1,640 ft/sec and a muzzle energy of 191 ft lbs. A flat trajectory resulted from the high bullet velocity so the effective range of the 22 rifle was increased. Owing to the high-velocity hollowpoint bullet, the new round was explosive in its effect on small pests or unopened cans of pop. The term “hyper-velocity” is generally applied to 22 LR ammunition that produces very high velocity.