Hodgdon Benchmark Smokeless Powder - 8lb Keg - As the name implies, this Extreme Extruded propellant was developed for precision cartridges, such as benchrest and small varmint cartridges like the 6mm PPC, 22 PPC, 6mm BR, 22 BR, 223 Remington and 222 Remington. Additionally, it performs superbly in the 308 Winchester with light match bullets like the 147/155 grain versions. See the Hodgdon Annual Manual for recommended uses of this powder.