How many times have you tried to figure out what to do to get your AG to shoot those tiny groups?? Only to find yourself up against a wall of seemingly no solution. Just to give an idea as to how sensitive an AG can be to even the slightest changes, even moving the muzzle brake slightly can/will change the point of impact. At least mine. I have brakes on 4 AGs. 2 are the same make and model. Today I was shooting one that gives very good groups. However the report is rather sharp. I decided to move the brake in an attempt to determine if the crack could be changed by moving the brake. I moved the brake out as far as possible and still be able to fasten it down. I was surprised to see the pellet impact move about 1.5 inches. I moved it back and the POI returned to where it had been. I moved the brake foreward and back with the pellets impact moving as the brake was moved. I had never thought that moving the brake would result in the POI changing that much. The impacts stayed in the horizontal, but moved in the vertical.
I tried the experiment with an another AG with the same results. And then a 3rd AG. Moral of storey? It may be a good idea to set the brake where you want it ( and leave it there ) then sight in your AG.
