I recently got a brand new never fired tec 9 and have shot it twice. Once in moderate temerature and once in sub freezing temps. On both occasions it worked well with remington umc ammo, but on the cold day it jammed consistantly with my friends winchester ammo. maybe it was just the cold or maybe it was the ammo. I know these guns are notorious for jamming, but I'm wondering if there is a brand that works best with these guns.

