Thread: How much clearance is needed

Originally Posted by Sideshow

I'd think that the whole unit would expand as one. So the action would move with the barrel.

Heat expansion yes. This should be fine, but barrel whip, especially if it is a thinner profile barrel. Though generally this is further down away from the action where the barrel thins down. My usual guide is as long as piece of paper moves freely between them you should be fine. If it gets "blurry when you look at the gap, cut a hole in a piece of cardboard about 1 inch round and have a light behind the rifle. Hold the card up to mask the entire unit except for wher the bell end of the scope is close to the rifle and see how much the light comes through the gap....

The whip in the barrel goes the whole length of the rifle like a wave it is not just in the barrel think of a small earthquake when you fire a shot