I'm using my mp 4 cavity brass mold to cast some bullets,everything is up to temp but I have one cavity that doesn't seem to want to produce a sharp edge on the band. What might be causing this? Contamination of some sort? I believe it to be in the cavity closest to the mold handles. I've tried pouring in both directions with no big change.
Sent from my LYA-L0C using Tapatalk