Never used anything but Pyrodex and Never had any problems at all.. didn't know I was doing it wrong all these years,been using it for 33 years,,in 5 different rifles in 5 different states in all weather conditions, from Florida to Maine,if you clean your rifles like you should you won't have any problems either...
However your mileage may very,,what ever floats your stick....
Dalai Lama: was credited with saying:When you talk you only repeat what you already know,But when you listen you may learn something new..see you up the trail,if your in the lead ..please don't spit..