I've cast bullets for over thirty years, mainly for my 44 Redhawk. When I started tin was easily found due to the use in newsprinting, now it's much rarer and a lot more expensive. So now days antimony is added for hardness (wheel weights) trouble is that antimony and lead melt at slightly different temps and if one doesn't watch the temp, stir and flux frequently you may end up with the antimony crystalizing while lead is still molten which causes pure lead to form around the antimony. Though the bullet may test hard it can smear lead in the bore. Before my bullet mould came that I ordered from Lee Factory Outlet I bought some hard cast .40 cal. bullets at a gun shop that leaded my barrel really bad, but once I started casting my own (with a little bit of tin I happen to find), the same powder and primer load left very little lead. For my 44 mag I have hand loads using Accurate Powder #9 using 19.5 gr under a Keith 245 gr. SWC lead no gas check sized to .429, that load in their book under a 240 gr. SWC lead is a start load rated at 1364 fps. so my loads are probably not that much slower. I also use near full loads of WW296 powder under the same bullet, both loads leave very little lead and all retreaved bullets have no signs of stripping. The 296 load is faster but I like both powders. One other thing, the base of the retreaved bullets only have a slight frosting from powder heat, no melting.
Last edited by Viking; 02-16-2010 at 08:41 AM.