This leadfree heavy 357 Magnum load generates full power plus. It is the typical barnburning turbocharged Buffalo Bore type of heavy 357 Magnum load and should only be used in all steel revolvers. It does not have the case capacity to use a bulky flash retarded powder thus there is noticeable muzzle flash with this load except when firing it from the rifle which yielded little to no flash. NOTE It should not be fired in revolvers with a light weight alloy frame or cylinder.