Re: full bore projectiles revisited
You could try a 50 cal minnie, Lee made molds for them.
Even the Lee REAL bullets can be a very tough start in a rifle. You are basically hand swaging a chunk of lead into the rifling. For that reason many of the old bullet shooting muzzleloaders had either false muzzles or a loading lever to press the bullet into the bore. Have you tried an old fashioned TC Maxiball. They were designed for TC bores.