I finally was able to get to the range and fire my new PTR 91. I mounted a scope on it and had to sight it in. I have never sighted in a scope that sits this high off the barrel and it took me almost 40 rounds to get it roughly sighted at 50 yards. Usually I will bore sight the scope but due to the fact the scope is mounted so high I was unable to do that too. So I was looking for tips and suggestion on how to do this for future reference. I guess next time I should start by making rough adjustment at shorter distances first and then gradually work it to the distance I want to zero in. But is there any bore sighting tools out there that allow you to bore sight a high mounted scope.