12-27-2019, 01:12 AM
1075 tech Wrote:Sounds like way over torqued muzzle device and barrel nut. I've never installed any muzzle device other than a thread protector and that is barely more than hand tight with a little blue loctite.
I try not to go more than about 40 ft lbs with the barrel nut.
My AA 16" was sub-MOA capable on it's first outing. Still holds that if I do my part with Black and SSTs. Fed Fusions are only a little looser groups. I can still get 1.5" - 2" with Wolf Steel.
Never had an issue with it.
Ahhh...I re-read my OP. LOL! I do NOT tighten barrel nuts to, as I wrote, "80+" lb ft! That's my LIMIT. I set a lower limit of 30 (do it 3x with greased threads) and tighten it beyond 30 to time the nut with the gas or piston, not to EXCEED 80 lb ft.
I try to keep the barrel nut ~40 lb ft. (This particular build has two shims to time the nut and keep the torque to something below 80.)