Re: retumbo not workn
Have you tried H-1000? I know it is a little faster than Retumbo, but I switched from Retumbo to H-1000 in my .338 Edge. Wasn't getting the consistency I wanted from the Retumbo. I would get the same type of grouping that you are talking about. After I switched my E.S. droppped to 11fps, my S.D. dropped to 5, and my last group at just under 200yds was .750". Also, have you tried different primers?