Been casting for 25 some years now but new (as in not done any yet) to PC'ing.
Started casting 45 cal for my 450 Bushmaster and 50 cal muzzleloader recently. Lee mold specs at .452 but as cast bullets mic out at .454.
My question is should I size before pc'ing and then again after?
Just as an experiment I did size a few as cast without any lube and they did mic at .452.
Am I going to have die leading issues?
In the past I always tumbled lubed before sizing.