Has anyone gotten theses to shot better then sub moa when seated to mag length out of a 223 Wylde ar. I have tried cfe 223, 748, tac, ar comp, 8028xbr, h335, and blc2. I get super consistent velocities as measured by a Labradar SD of around 9 and ES less then 15 for most of the loads.

Best I have been able to manage is just over one moa for 5 shots. The gun shoots Sierra 77 matchkings close to .5 if I do my part.

Barrel is a Rainer ultramatch with less then 1000 rounds down it