You had better check out some books and read up,Leigh. You could get yourself,or someone else killed,and be in lawsuit land. I would never make any gun that was not safe to shoot. Too much chance that down the road,the gun could pass into someone's hands,who would think it was real,and would do something stupid,like break open a bunch of shotgun shells,and load smokeless powder,and blow the gun up. That has happened a lot. People don't know better,and use scavenged smokeless powder into antique guns often,and blow them up." Black powder only" is now stamped upon all black powder repros.