I have a new Ruger American Rifle in 7-08. I mounted the same Kahles scope I have had on my other rifle for years. Everything Loc-Tighted looking good. Went to the range. First shot 1"left and 1"high at 100. Went to move the scope to the right. 3 clicks =1" acccording to the scope dial. Next shot right where I want it. Next shot 5 inches to the right. This same scenario goes on for the better part of a box of shells. First shot right where it should be the next shot somewhere far from the first. My question is this do the barrels heat up extremely fast nd wasn't I giving it time enough to cool or do I look elsewhere like the scope, or even the crown although this is a brand new rifle.
