imr7828

Hello all, I’m new to LRH and looking for some advice on a rifle I’m loading for. Components: Ruger 77 action Brux stainless 26” 1-8 New Norma brass Fed GM215M 175gr ABLR IMR7828SSC I’m seating bullets to fit mag box, that gives a 0.120 jump. I’m increasing charges 0.3 grain at a time...