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

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The major complaint about the 22 WMR has centered on the subject of accuracy. It is popularly believed that the 22 WMR does not give accuracy that is quite the equal of that given by the 22 LR and some newer rimfire rounds. This perception may be in error, but that topic will be addressed more fully in later chapters.

5mm Remington Magnum

In 1970, Remington unveiled a rimfire magnum cartridge that offered even better performance than the 22 WMR. However, that cartridge deviated from the usual rimfire caliber because it was a 5mm or 20-caliber (actual bullet diameter is 0.2045”). The 5mm Remington Magnum cartridge produced 2,100 ft/sec with a ballistically efficient 38-grain bullet. As a result, the muzzle energy was 372 ft lbs, and the remaining energy also exceeded that of the 22 WMR at longer ranges. The 5mm Remington used a case that is slightly larger in diameter than that of the 22 WMR. Remington produced the Model 591 (box magazine) and Model 592 (tubular magazine) boltactions, but these were the only rifles produced for the 5mm Remington cartridge. Thompson/Center produced barrels chambered for the 5mm Remington to be used on the single shot pistols that they market. The 591 and 592 were discontinued in 1974 with a total of approximately 50,000 having been produced. The 5mm cartridges have become highly collectible with prices for a full box often being in the $50 to $75 range or more.