Yesterday I had my DPMS built .308 out doing some dry firing practice (recent medical issue keeping from firing live ammo). I noticed that most of the time the crosshair would jump .2-.3 mils to the right when the trigger was tripped. It did this not matter how I drove it or what kind of rest I used. I thought it might be me so I pulled out two bolt guns and no problems at all. I have also done a lot of dry firing with my M110 and never noticed this problem. The only modification I've done to the DPMS was install a Chip McCormick Tactical Trigger. I will admit that it has given me fits trying to find a load that will group decently and consistently. Any ideas?