Shooting my Model 70 in 7mm STW, I've used a box of Nosler Custom Ammo that I got for a good price. I can't hit anything with it! At 100 yards, it's all over the paper, at 200 yards, it's OFF the paper! I had assumed the Nosler ammo was just too hot, as it's spec'd at 160 grain Partitions at 3075 FPS. In fact, I shot the last four rounds yesterday, polished the brass overnight, and this morning I'm planning to start reloading them and working up a load that goes where I aim it. I figure where it goes is more important than how fast it gets there. However, last night I looked the rifle over (really just admiring her, LOL) and I noticed a mark on the scope that looks to me as if the scope is moving in the front ring when a round is fired. Maybe you can see it around the bottom of the ring. Do y'all agree? Does this indicate the ring isn't tight enough? And -- just how tight do these rings need to be? Crank 'em down? Is there actually a torque value? How do I fix this?