I have shot the Power belts in my old .50 flintlock and they shot good out to 100 yds which is as far as I tried them. I have built some muzzle loaders for people than they wanted to shoot roundball and bullets if they needed. They all shot the Hornady Great Plains with the wax lube on them. Very accurate. If he wants to try some different sabot/bullet combos, I can send you or him some from a ammo can full of stuff I have collected for sighting peoples muzzleloader for them to get best groups.

Mike

You don't quit playing because you get old, You get old because you quit playing.