I have a question that I'm hoping more experienced long-range shooters can help answer. I inherited a gun that my father sporterized from a 7.7X58 Arisaka. Along with the walnut stock and turned-down bolt handle, he fabricated what seems to be a very sturdy scope mount. However, the mount is off to the left, approximately 2" from the line of bore. I've shot the gun a few times and had no difficulty sighting it in or getting decent groups from it. My question is: What will the left-of-center scope mounting mean for shots beyond say 275 yards?