Re: Me or the rifle
First off, have you shot it off "the bench". If all you do is put it on sand bags and shoot, it could be you if you aren't shooting from a rest in the field. I may use the bench to zero them in, but I at least take a few shots sitting or standing as I would be out in the field.
The temp of the gun could also be causing it. But, since it's a 7600 you don't have the normal problems with the stock.
Personally, if I have no confidence in a gun I get rid of it.
Remember, shoot straight and shoot often.
Good... Bad... I'm the guy with the gun.