I've been dealing with a rather unusual problem with the scope on my .300 RUM. After breaking the rear mount windage screw from recoil, I spoke with Burris. They advised and sent me double dovetail mounts for no charge. Great customer service. When I got them, I took great pains to align both rings in the dovetails. I'm using Signature rings with the inserts. I installed the scope and went to the range. Once there, I noticed that the power ring on the scope binds when increasing, and I have to force it, making ratcheting noises. If I loosen the ring cap, this goes away. I even tried sliding the scope to get the ring further away from the power adjustment, to no avail. I spoke with Burris yesterday and they advised I check the OD of the scope for being oversize. I suspected some sort of misalignment, but Burris said that is virtually impossible with Signature rings, since they self align.The scope is a Weaver V10 2x10x50 and my vernier says it is .002-.003" oversize. Will this cause this problem ??? I'm at my wits end, having never encountered this before. I've even tried sanding the inside of the inserts a bit, no difference . Anyone have any thoughts ???
TIA.

bowhuntr

[ 11-13-2002, 19:01: Message edited by: bowhuntrrl ]

I highly doubt you are "crushing" your scope tube. I'm not familar with the Signature rings, but assume they screw together (top and bottom) like most other rings. The torque required on the screw to put that kind of pressure on the tube would be greater than the strength of the fastener. It would most likely snap while tightening. I did that with a pair of Leupold QR rings, but I broke the HEX wrench I was using.

Have you tried another pair of rings? If you have and the problem still persits I would say it is probably your scope being out of spec. What would be out of spec I'm not sure. If Weaver backs their products I see about getting a replacement or at least that one looked at.

I think it is quite possible to put enough pressure ont he tube to bind the mechanism. Remember when tightening use a torque wrench if possible. In any event the rings will most likely not be screwed down completely flat, there should be a small (tiny,itsy-bitsy, few/1000's) gap between the ring halves when tightened to the correct torque. This insures that the rings have complete contact with the scope tube, if you had to make the rings completely mated to each other you could not ensure contact on the tube based on the manufacturing tolerances.