I installed side rail bi-pods on my 995ts with a Kruger 1.5-5 scope.I have also installed aluminum top and bottom rails. When i went to sight in the scope it was dead on off the bench using the bi-pod. Then i stood up and fired a few rounds standing and it was 6" low. Has any one had this problem with bi-pods pushing up on the barrel? I removed the bi-pod and placed a sand bag in front of the trigger where my hand would be for standing and set the zero and no problem then.