I'm losing patience with this rifle.
12FTR, 308. I've tried Hornady & Fed brass, always sized, bumped & trimmed.
Varget, IMR4064, RL15 & Imr4895. Std and mag primers.

Hornady 155 & 168.
Factory Fed GMM 175.
Jump is from .005 to .030.
Best of all the combinations I've tried is 1" at 100.
And even that isn't consistent.
I have good ES & SD.
I hate the 1/12 twist. Now considering a new barrel.
Rifle is new.
Short of that, I'm lost.