hey guys,i have a good sized batch of half pure half wheel weight. it also probably has 1-3% tin, because there where a lot of soldered seams in the lead pipe I used for the pure. the question it, is it tough enough as is, to shoot out of my 45-70 at about 1350-1400fps? I am looking for good expansion without the boolit breaking up. also, would this alloy heat treat much, with I am guessing only 1.5-2% antimony (left from the ww's)? my guess is maybe a couple bnh's at most, but I don't have a tester anyways. well, thanks and have a good day! travis