As the name implies, Benchmark Powder is an Extreme Extruded propellant was developed for precision cartridges.As such, it is ideally suited for benchrest and small varmint cartridges like the 6mm PPC, 22 PPC, 6mm BR, 223 Rem. and 222 Rem. Additionally, it performs superbly get more info in the 204 Ruger and with light match read more bullets in 30