Originally Posted by
Eurodriver
3.5" at 100 yards?
With a GAP?
Are you shooting surplus ammo from the USSR?
It was Federal 168 grain GMM which should hold at least 1 MOA. Here is my target from yesterday, but keep in mind that I was cleaning the barral after each shot:
IMG_2531.jpg
The top round was the first round out the barrel and I gave it the maiden cleaning about a month prior; meaning the barrel and brake were dry. However, the POI marched down the target with each cleaning despite holding the POA at the target center and making no zero adjustments. The 10th round was the very bottom. Keep in mind I tried to remove any excess solvent from the brake and chamber before each shot.
Now, I just got back from the range today where I shot 3 groups of 3-round with cleaning between each group:
IMG_2532.jpg
In the first group (center), the cold bore shot was 0.2 MILs low and right. The other 2 rounds are basically on top of each other. Notice that the cold bore shot is within 1/3" of my cold bore shot yesterday; that removes optics from the equation since I made no windage or elevation adjustments.
In groups 2 (lower right) and 3 (lower left) the cold bore shot was 1 MIL due south with the other 2 rounds touching. I have NEVER had cold bore shots come in 2" low - ever. I did adjust elevation 0.2 MILs down between groups 1 and 2, and 0.1 MILs left between 2 and 3. The only thing that I can think of is that some residual solvent is in my brake or chamber causing these extreme cold bore shots.
I was planning to move on to some 5-round groups as part of my break-in, but I might as well wait to see what GAP plans to do with the stock.
EDT: Sorry that the pics of my targets are sideways. M4C often posts my pics rotated 90 degrees. I don't know why.
Last edited by Sensei; 03-12-17 at 20:00.
I like my rifles like my women - short, light, fast, brown, and suppressed.
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