Hey everyone. Just been playing around with my Mosin and a new mold (lyman 301620) which measures out at about .301 or .3015. My Mosin slugs out at .3125. I had previously (last summer) tried paper patching a lee 309-170 gr boo lit up to about .3135-.314. I had issues with some pretty serious leading. I posted about it and someone suggested using thicker paper. Hence the smaller Boolit today. I pp'd it to .3135 again, obviously, with some thicker paper (loose leaf, about .0025"). I ran into the same issues as previously. I'm wondering if the loose leaf just doesn't have enough integrity to be used? Or is it more likely that there is something wrong (throat erosion????) with my gun.
Thanks in advance for all the input!