What is the 22 PPC? What is the 22 PPC used for?

What is the 22 PPC?
What is the 22 PPC used for?

Historical Notes:

The .22 PPC was developed in 1974 by Dr. Louis Palmisano and
Ferris Pindell, primarily for use as a bench rest cartridge. Although
originally a wildcat, Sako of Finland introduced commercial rifles
and ammunition late in 1987. Norma followed suit in 1993 with
loaded ammunition. Since it is an American development, it is listed
here as a current American rifle cartridge, rather than as a European
cartridge. The cartridge is based on the .220 Russian case, which is
a necked-down version of the 7.62x39mm Soviet military cartridge.
The Wichita Engineering and Supply Co. made the first rifles for
both the .22 and 6mm PPC cartridges. Many custom rifles have
been turned out in this caliber. In 1993, Ruger announced its No. 1V
and M77 varmint rifles in this caliber.

What is the 22 PPC?
What is the 22 PPC used for?

General Comments:

The originators altered the .220 Russian case by giving it 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. The cartridge 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, and
this definitely places the .22 PPC in the varmint and small-game
class. A 1:14 twist has become pretty much standard for these rifles,
although a 1:12 twist will sometimes be found.

What is the 22 PPC?
What is the 22 PPC used for?

Reference: Retrieved from 14th edition Cartridges of the World (a complete illustrates reference for more than 1500 cartridges by Franks Barnes edited by W. Todd Woodard 12/01/2014, p236