I have a bunch of pure lead, and a sorce of tin. Also may have found a sorce for Antimony.
Question is How much Antimony is too much? Want the bullets hard to push them along at around 2500fps.
Gas checks would proberly be used.
Was thinkingh on a 80-5-15% lead-tin-Antimony mix for around 25BHN.(hopefully)
Is there any advantage in going over the 25BHN?