|Place of origin||United States|
|Designer||Louis Palmisano and Ferris Pindell|
|Parent case||.220 Russian|
|Bullet diameter||.224 in (5.7 mm)|
|Neck diameter||.246 in (6.2 mm)|
|Shoulder diameter||.431 in (10.9 mm)|
|Base diameter||.440 in (11.2 mm)|
|Rim diameter||.441 in (11.2 mm)|
|Case length||1.515 in (38.5 mm)|
|Overall length||2.100 in (53.3 mm)|
|Primer type||Small Rifle|
The 22 PPC is a centerfire rifle cartridge developed in 1974 by Dr. Louis Palmisano and Ferris Pindell, primarily as a benchrest cartridge. The cartridge is based on the 220 Russian case which is a necked-down version of the 7.62x39mm Soviet military cartridge. Several companies have made custom guns in this caliber, however no major companies did until 1993, when Ruger announced their No. 1 V and M77 varmint rifles in this caliber.
Changes from the .220 Russian Cartridge
The changes from the 220 Russian into the .22 PPC include a 10-degree body taper and 30-degree shoulder angle, as well as expanding the neck to accept the standard .224- inch diameter bullet used in the U.S. Cases are made in Finland by Sako or in Sweden by Norma and use Small Rifle primers. Although the 22 PPC is a short, rather stubby case (only 1.51 inches long), it nevertheless develops ballistics superior to some larger, longer cartridges such as the 222 and 223 Remington. The 52-grain bullet can be pushed out of the muzzle at over 3500 fps, placing the 22 PPC in the varmint and small game class. A 1 in 14-inch twist has become pretty much standard for these rifles although 1 in 12-inch twist will sometimes be found, depending on the load and bullet weight.
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