Just got a new 20sf. New to pistol but not rifle reloading. Shot 100 rounds of Remington UMC nickel cases. A lot of them are slightly bulged. Are they ok to reload. Is this a sign that I need to go to an after market barrel. Planning to load Hornady 185 xpt, not really feeling like I need to go over 1200 fps. Probably not going to shoot it a lot, more of a niche gun for me, trail and hunting use.