I just started reloading and made 200 FMJ 230gr rounds with S&B brass and they feed with no issues in my R1 1911. This go round i used the G.F.L brass i have same bullets, same overall length (1.260) same sizing and seating dies by they won't feed. They are getting sick in the chamber about 3/4 way through. The only difference i can find is the wall thickness of the brass potentially. Had anyone else had issues like this?