I would try a different powder. I had sorta similar results. I did the same as you, but with 3 different kinds of bullets in 2 different weights. I get patterns. Factory loads shoot good. I even loaded to the same overall length. I was using IMR4831 as I had it on hand. Just haven't got around to trying different powders yet.Zeus50 said:i havne't had any luck reloading for mine. i loaded up 5 sets of 6 rounds of different charges of imr4350. i'm shooting 140 gr hornady sst.
51 - ok group
51.5 - group gets bigger
52 - group gets bigger
52.5 - group gets smaller
53 - similar group to 51...
not sure what to do next. I've done this twice to make sure it wasn't me. same thing happened.
Should i try different charges? maybe 53.5? i did not have any pressure signs.