I have a long tang Winchester model 71 that I purchased about 6 months ago. I was lovingly fondling it this afternoon and noticed that the rear sight is not "parallel" to the barrel but rather wanters slightly to the rt at its most rearward portion. I cant believe this is the first time I noticed it. The proof marks on the receiver and barrel line up perfectly and appear to be at the very top of the rifle, but the rear sight elevator points to the rt. of both proofs. I cant leave this like it is. I have only shot the gun about 5 times and it did not hit a bucket I was aiming at 50 yds away. I guess now I know why. Anyway, I can only assume that either my rear sight is out of spec, or my dove tail was not put into the barrel at 90 degrees to its long axis. I am planning to find a replacement rear sight and try it first. If that doesnt work, I guess its off to a Winchester specialist. Have you guys seen anything like this, and if so, what are your recommendations? Also, where can I find an excellent condition rear sight assembly for a Winchester 71 long tang? thanks again.