I bought some blue Loctite and put some on my side charging bolt handle screw and the thumbscrews on the scope rings. These had been loosening up with shooting. The Loctite is working. No loosening after shooting 4 days ago.
The best group with the 16" BCA Grendel barrel was 4.75 MOA with Wolf steel ammo. I shot at 100 yds. The shots appear to be stringing horizontally.The second group was 7.0 MOA and the third group was 9.25 MOA. The sight picture looked about the same each time.
A few days before that I shot my AA Overwatch 24" Grendel and the best group with Wolf steel ammo was 1.25 MOA at 100 yds.
The scope thumbscrews had loosened then as well. The second group was 3.5 MOA. After tightening the screws the third group was 1.13 MOA.
The fourth group was 2.75 MOA. I haven't shot this upper since Loctiting the thumbscrews.
The best group with the 16" BCA Grendel barrel was 4.75 MOA with Wolf steel ammo. I shot at 100 yds. The shots appear to be stringing horizontally.The second group was 7.0 MOA and the third group was 9.25 MOA. The sight picture looked about the same each time.
A few days before that I shot my AA Overwatch 24" Grendel and the best group with Wolf steel ammo was 1.25 MOA at 100 yds.
The scope thumbscrews had loosened then as well. The second group was 3.5 MOA. After tightening the screws the third group was 1.13 MOA.
The fourth group was 2.75 MOA. I haven't shot this upper since Loctiting the thumbscrews.