04-15-2018, 12:56 AM
Old Soldat Wrote:I have 2 24" barrel A/A Grendel A3 Overwatch and after 2 years using multiple types of powders and 5 different type bullets, I still can not get 1MOA at 100 yards.
The scope is mounted correctly and not loose. I have 6 other rifles will shoot 1MOA at 100 yards. All ammunition is hand loaded. I am an old soldier so I believe in having a clean barrel.
Suggestions are invited.
OS:
Those Overwatch barrels are probably Shaws. Not the best but good enough for hunting purposes. If you are focused on precision, get a top end barrel.
Also, you may be cleaning too much. Shoot it and leave it dirty for a while and see what happens. Or just run a bore snake through it and a chamber brush after blasting.
Oh yes, if you haven't done so yet, try some 120 Sierra Match Kings. Very forgiving bullet. If it won't shoot well with a 120 Match King, get a new barrel.
LR55

