Using the Roto Metals 16/1 out of my Lee Pro Pot at 700+ deg. (RCBS thermometer) into a Lee 6 cav 158 swc tumble lube mold prepped with kroil I got a pile of almost perfect boolits. Could not have done it so well the first time without all the great info on this board.
The boolits were air cooled so I was surprised that they measured .361. Too large to chamber in both my revolvers. Was hoping for .358 to .359. Guess I'll contact Lee and see if they can get me a mold that throws at .358. Otherwise I will need to size which I had hoped to avoid.