Wow, never thought that that was a possibility. Have you inspected your barrel to see if any residue was deposited? Guess I'll stick to my Lyman sizer.
I never thought about the powder reacting with the PC and breaking it down. Not concerned about it now either. It’s not going to reach the sides of the bullet and there isn’t enough lube from a lubrisizer on the base of a bullet to protect it from the hot powder anyways.
I still have my Lyman sizer too but the only bullets I size in it (without lube) are 45-70 bullets because I don’t have a Lee push through sizer for them. They are still powder coated with Eastwood brand paint.
Powder coated bullets handle like jacketed ones. No sticky hands and if you drop one nothing sticks to it. I don’t see myself ever going back to the “old” way…