AR Sponsor
Posted: 3/3/2010 3:11:21 PM EDT
|
I saw another user post this picture of their rifle (jerz_subbie) and noticed they have ring marks similar to what one of my old scopes (that I've since sold) had.
Notice the marks to the left of the rings - is this normal? Only reason I'm asking is because they seem to be almost... impressions into the tube rather than the typical scuffing you get from friction. The scope I had (a Meopta KDot) was only mounted, never fired, and it had these same markings. It led me to believe that the rings were stressing the tube, particularly where the two halves meet. Is there a tried and true method to avoiding these? 
|
|
I have the Burris XTR and my scop doesn't have the lines. I also followed the instructions and only applied the correct in lbs. I think it was 14 in lbs. for the top screws. I would think you could over torque it and cause the scope to crimp. Funny thing is, his other pictures don't show the lines.
|
|
I would say that is Normal with horizontal split rings. What you are seeing is the pressure points that somewhat compress or smooth out the finish on the scope. To avoid that you would need to lap the rings with a lapping bar and lapping compound, this will take out any high spots and provide more even pressure on the scope.
Another way to avoid this is to use a Laure Mount, the vertical split ring design seems to eliminate the problems noted above and is the reason that lapping is not needed or recomended on Larue mounts. I have 2 K-dots and had 2 Aimpoints before that, all in Larue mounts and when I switched them around in the mounts due to different setups and changing my mind on things  none of them had any marks whatsoever. Hope this helps or anwswers your questions.
|
AR Sponsor