Its not the bag. I'm curious as to how it's bedded. There's also probably too much pressure, or uneven pressure on the barrel. Formid is right in his post, but only when dealing with a freefloated barrel. The stock appears to be unoriginal to that rifle. At this point, I'd pillar bed and freefloat the barrel on that rifle. You'll probably have a sub moa shooter then, if done right... furthermore, I'd pull that damn 2.5-8 off, get rid of those qd's and start over. Leopold DD's would be better.
