TexasCHLforum.com

I'm no Sig expert either. I just got my first one about a month ago. I'd disassemble the pistol IAW the manufacturer's instructions, check the end of the firing pin for obvious wear, and maybe consider replacing springs. BUT, given the low round count on the pistol, and the fact that the malfunctions only occurred with one brand of ammo, I'd simply change ammo brands and not even bother with the rest unless it starts having malfunctions with different ammo types.

Limp wristing wouldn't have caused a FTF that would have been solved by a second strike. Most likely hard primers on cheap ammo. You might check your firing pin for wear.