Ran up to 66.5 of 7828ssc today with sub 3/8" groups and 3030fps with sd of 1.2. R26 at 66.5 shot into .2 at 3065fps with sd of 3.1. Clearly my rifle isn't picky at all as poi for both R26 and 7828 is less then .2 mils.

In both R26 and 7828 I saw 30-40fps per grain of powder. I'm thinking I am done screwing with it and will use R26 as I have plenty

Had 10 rds of various loads left over that went into .53 (2@ 65.5, 266, 1@ 66.5 of 7828, 266, 1@ 66.5, 2@ 67 of R26) velocity ranged from 2970-3065fps.