Shooting a .338 LM RPR. Shooting off a bench/bag with a rear leather "eared" bag. Every shot seems to pull the rifle left, in other words, after recoil my scope is usually aimed about 5' left of the target. Is this due to my "technique", the way I'm grasping the grip, pulling it in to my shoulder, etc?? Admittedly, I'm getting too old and I'm probably too small for this size of rifle, kinda kicking my ass. Technique or something else??