Handloading
The parent cartridge for the 6PPC is the .220 Russian, which in turn derives from the 7.62×39mm. Brass can either be purchased, or formed from .220 Russian brass (7.62 x 39 mm can also be used, but .220 Russian brass is usually higher quality and thickness, since it is designed to operate at higher pressures). The .223 inch (5.56 mm) neck of the .220 Russian is expanded to .243 inches (6 mm) by running the case through a full length sizing die for 6mm PPC. Next the case is trimmed, loaded, and fire formed by loading and firing the round through a 6mm PPC rifle. Recently, Lapua, Norma and SAKO have begun making 6mm PPC brass.
As with other cartridges used in competition, precise handloading, a good rifle, and lots of practice make it possible to shoot very small consistent groups, with 5 or 10-shot groups with center-to-center measures of under 0.200 in (5.1 mm) at 200 yards (180 m).
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