I too started with AM GNR and when I started reloading,set out to mirror it. Usinng RCBS dies. 1xF Horn brass, Fed 210 primers, 44 gns Superformance, Horn 140 gn BTHP Match. Just under 2700, with bulletholes ingroups touching @ 100 yds. COAL 2.80 Good luck. Started working with H 4350 at...