I usually use old wheel weights to cast my 303/308 44 and 45 bullets but iv found a bag of linotype at the back of my garage and have a pile of pure lead piping.
What percentage linotype to lead would be a good starting point for a 245 grn .429 cal bullet to use in a Marlin 1864. ?? I tried 50/50 but found them very brittle
and although they cast ok i only made a few and only shot 5 which weren't accurate. I only use 5.5 grns of GM3 powder so not hot loaded by any means. Was
thinking of starting at 10 per cent and scratch testing in comparison to shop bought. Whats your thoughts.?? Tim