Dirt farmer
After exhaustive research and advice superformance can be used in any cartridge that uses H4831sc. Start 3 grains below your max load of H4831sc and work up to your same load using superformance.
Superformance is slower burning than H4831sc and Reloader 22 but is capable of giving higher velocity in some instances than the original powder. There are however exceptions to this, consult Hogdon manual and Hornaday No10 manuals.
As always reloading can be hazardous so follow ALL PRECAUTIONS.
BOB
