About 6mm-06

The 6mm-06 is a wildcat cartridge made by necking the .30-06 Springfield case down to hold 6 mm (.243 in) bullets. It keeps the full-length .30-06 case and Large Rifle primer, giving a large powder capacity for its bore. Reloaders use it with heavy, high-BC 6 mm bullets and slow-burning powders to reach very high velocities for long-range target shooting and varmint hunting. Its overbore design favours long barrels and causes faster throat wear. As a wildcat there is no official C.I.P. or SAAMI specification, so dies, chambers and load data must be matched carefully.

Technical Drawing

Based on Wildcat, the max. allowed case length is 2.494 in / 63.35 mm, the max. cartridge length is 3.340 in / 84.84 mm, and the max. allowed pressure is 58,740 PSI / 4,050 bar.