Originally Posted by
18Bravo
DrewP "I think you're exposing yourself to risk of adhesion problems by doing itntjat way. The sizing polishes the surface and also could contaminate it making it less toothy for bonding of coating. Then again if it passes the test then it's good to go I guess."
Not sure what you mean. I size after casting to root out the culls that may have thrown too small. I size again after PC to insure uniformity since I'm not good enough at powder coating to apply the same amount of paint to each casting. When I'm finished I apply a light coat of Rooster Jacket Lube using the tumble method. This method has served me well for thousands of rounds with zero leading even when I'm pushing them down the tube at 1500 fps.