I want to start casting bullets for my Vaqero in 45 lc and a 1911 in 45acp . Do they make a good starting point for casting alloy or would I have to add something else ? Would it be ok to melt down the large amount of 38 swc that are at the local range back stop. It is like a sand berm , all that I would have to do take a shovel and a screen we use for screening brick sand to get them . I already cast round balls for muzzleloaders , sinkers and jigs for fishing . I have tried to get wheel weights and don't have the connections to get them locally .