Quote Originally Posted by tim56 View Post
Using wheel weights and always overfill each chamber. May try a pure lead/tin mix and see what difference I get. Iv been casting for 45/70 for many
years but have only noticed the size difference recently. When I sold my Ruger number 1 I let the mold go with it. Wish id kept it now.
Check your wheel weights are lead. The new ones are made of zinc and zinc shrinks unevenly when it cools.