I have no idea how many pure lead, saboted bullets I have shot out of muzzleloaders, but performance was always reliable on game. In my opinion....pure lead is the way to go in a saboted muzzleloading bullet, anyway. Unlike many jacketed or hard cast lead bullets, a pure lead bullet will usually expand reliably, even at relatively low speeds. Ensuring a deep, wide wound channel and significant energy transfer. A must for quick and humane one-shot kills on game animals. If you are a fan of Ross Seyfried....he often praises the virtues of pure lead bullets, when hunting with blackpowder arms. Whether loaded by the muzzle, or breech. Sure....go ahead and load them in your rifle. They will work just fine.