44 joe, generally speaking, most molds are cut .002-.003" oversize. then they are sized down.
some molds still need to be opened up more than that. it depends on the bbl quality and slugged size.
most people use wheel weights, some use 20 lbs of wheel weight with about 1/4 -1/2 cup of chilled magnum shot to help with the mold fill out and hardening properties of the alloy. then water quench for a really hard bullet.
zinc has proven to be a real pain in the tookus for casting bullets. the flat, nearly silver plated looking weights. they are very stiff and hard. generally if they flatten fairly easy, they will make good bullets.
hope this has helped, if you are still interested, order Marshalls book on casting etc. it is a real good start.
hope this has helped, halfbreed
some molds still need to be opened up more than that. it depends on the bbl quality and slugged size.
most people use wheel weights, some use 20 lbs of wheel weight with about 1/4 -1/2 cup of chilled magnum shot to help with the mold fill out and hardening properties of the alloy. then water quench for a really hard bullet.
zinc has proven to be a real pain in the tookus for casting bullets. the flat, nearly silver plated looking weights. they are very stiff and hard. generally if they flatten fairly easy, they will make good bullets.
hope this has helped, if you are still interested, order Marshalls book on casting etc. it is a real good start.
hope this has helped, halfbreed