I've encountered zero problems running these in a gas piston semiautomatic Sig. Far from the notion that lead bullets require more maintenance I've found the opposite is true. It's my copper bullets that copper foul, hence the need for cfe powders. A properly lubricated lead bullet is what I call a shoot forever load. They run clean, the barrel is still shiney after a range session and leaves a protective film. Kinda like a well used cast iron skillet used over and over. I must admit to making my own bullet lube. 60% beeswax, 30%avocado oil, 10% hoglard. Smear it on toast It's perfectly edible.
