I had almost given up on getting decent groups with my Savage 25-20 using the RCBS 85 gr. cast bullet. But I gave it another try.
The boolit is similar to the old 257312 mold, a plain based mold with no gas check. The cast boolits dropped at 0.259, I did not size them but hand lubricated the lower grease band. The were cast hard, #2 or harder. I loaded them to the maximum published of 10.7 grains of 4227. No evidence of any leading after 15 rounds
The accuracy was pretty good at 50 yds (3/4, x 1"approx.), and next time I will wear my glasses!. There was no key-holing. At 100 yds I was consistently breaking clays.
atr