AR10 6.5CM 22''HB powder choices?

[Mark611]

OK, here's what I have going on, I have an AR10 6.5CM 22' barrel 1&8twist, so far, I have tried the 147gn ELDMs the Hornady 140gn BTHPM, the 123gn ELDMs and the 123gn Match Monsters, all with 43gns of 6.5 STABALL, and my accuracy has not been there, 3'' groups @100yds, I have the rifle set up with a SA adjustable gas block and ULTRADYNE APPLO S break on it, the trigger is very good after some spring changes 2 to 3lbs, I have an ARKEN 6x24x50 SH-4J Gen3 optic and ARKEN 34mm rings, everything feels solid with the rifle, what do you guys recommend I try for a load development? I also noticed some ejector marks in the brass, I have some 120gn SMKs I want to try, I have VARGET, H4895, RL15, RL16, A2495, A2460, TAC, AR Comp, and a few other powders, what say you?

 

[The boogalorian]

I would suggest sticking with H4350. RL16 might be worth trying if have it. Load (10) of each bullet with a mid book charge. Don’t push the cartridge or you will tear the brass up big time. I also suggest getting th JP HP bolt and carrier with a H2 buffer.
I just built a AR10- 6.5 creed. 39.0gn behind Hornady 140gn. My brother’s likes 123 gn bullets. Good luck.

 

[SGT. Slaughter]

If you haven't tried the berger 130 otm you should. I have a Seekings AR 10 I think you will be happy.