Posted: 5/17/2013 10:28:54 AM EDT
I have a NF 2.5-10x and it has spent a couple of years in a LT SPR 1.93 mount.
The problem is that the scope keeps turning in the rings. I've heavily used this combo, and it has been abused. In all the abuse, the scope has never moved. However sometimes I find that after a period of storage, the scope has turned in the rings. Currently I have been tightening the bottom screws first and torquing them to 30 inch pounds, aligning the scope, and tightening the top screws to 30 inch pounds. Still the scope occasional turns, and is noticeably turned when it does so. This problem has been driving me nuts. Any last suggests or ideas to try before I replace the mount and use something non-Larue? |
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That's weird, the scope rotates in storage? Is there something putting pressure on it while it's in the case, foam at an odd angle or higher density for a constant force? Having issues wrapping my brain around this one. Thats the weirdest part. Under abuse, recoil, etc, you can tell its fine. But then, either after sitting on my desk, or when its on the case, I can slap it back on the rifle and see its canted, and take a straight edge to the bottom of the scope or a bubble level and find that is it now canted. |
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That's weird, the scope rotates in storage? Is there something putting pressure on it while it's in the case, foam at an odd angle or higher density for a constant force? Having issues wrapping my brain around this one. Thats the weirdest part. Under abuse, recoil, etc, you can tell its fine. But then, either after sitting on my desk, or when its on the case, I can slap it back on the rifle and see its canted, and take a straight edge to the bottom of the scope or a bubble level and find that is it now canted. Does this occur only after removing the optic and mount or does it sometimes occur without removal? Just curious.. |
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Ok, twice now I have set the scope level in the rings, and set the scope in mount on my desk. In less then a day, I come back and can find that the scope is no longer level in the mount.
Starting to wonder if either the scope or the rings are out of round, and thus is settles into its canted position. So any ideas? Any real help here? |
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Ok, twice now I have set the scope level in the rings, and set the scope in mount on my desk. In less then a day, I come back and can find that the scope is no longer level in the mount. Starting to wonder if either the scope or the rings are out of round, and thus is settles into its canted position. So any ideas? Any real help here? So you're leaving it on your desk without attaching it to anything and it just unlevels itself?? |
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Ok, twice now I have set the scope level in the rings, and set the scope in mount on my desk. In less then a day, I come back and can find that the scope is no longer level in the mount. Starting to wonder if either the scope or the rings are out of round, and thus is settles into its canted position. So any ideas? Any real help here? How about if it's mounted to the rifle? Sounds like you might need to install a security system with cameras. I think you've got gremlins coming in at night and jacking your shit up. 
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Ok, twice now I have set the scope level in the rings, and set the scope in mount on my desk. In less then a day, I come back and can find that the scope is no longer level in the mount. Starting to wonder if either the scope or the rings are out of round, and thus is settles into its canted position. So any ideas? Any real help here? How about if it's mounted to the rifle? Sounds like you might need to install a security system with cameras. I think you've got gremlins coming in at night and jacking your shit up. This kid in HS was messing with me for a while and he was real proud of his Hot Rod Car with the new engine he built for it.......After school I worked at my Dad's Gas Station/Garage........ I started taking used motor oil from oil changes and some friends and I would pour a puddle under his car at different times........................... Drove the Kid nuts trying to find the oil leak from his new engine......................... 
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Ok, twice now I have set the scope level in the rings, and set the scope in mount on my desk. In less then a day, I come back and can find that the scope is no longer level in the mount. Starting to wonder if either the scope or the rings are out of round, and thus is settles into its canted position. So any ideas? Any real help here? How about if it's mounted to the rifle? Sounds like you might need to install a security system with cameras. I think you've got gremlins coming in at night and jacking your shit up. This kid in HS was messing with me for a while and he was real proud of his Hot Rod Car with the new engine he built for it.......After school I worked at my Dad's Gas Station/Garage........ I started taking used motor oil from oil changes and some friends and I would pour a puddle under his car at different times........................... Drove the Kid nuts trying to find the oil leak from his new engine......................... I like the cut of your jib 
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Drill instructors are still following you around and looking to catch your shit adrift and f'd up. Not funny! I still have basic training nightmares that my uniform looks like shit for inspection. Shudder. The only two things I can think of are lapping the rings and heavy use of loctite. Shouldn't have to do the first and the second could cause some cosmetic damage to the scope. If you ever figure it out, please post, this is bizarre. |
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I've called LT twice in the past. Each time I got different instructions on how to tighten the screws on the rings, and that didn't help.
Hell, I don't know if the issue is me, the scope, or the rings. Anyone knows of other rings that are the same height as the LT SPR 1.93? |
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Dismount the scope from the mount and put it in a set of 'V' Blocks........... Set up a Dial Indicator on the body and spin it in the V-Blocks.... See what kind of Run-Out you have................  So, care to send me a set of V blocks and a dial indicator? |
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Dismount the scope from the mount and put it in a set of 'V' Blocks........... Set up a Dial Indicator on the body and spin it in the V-Blocks.... See what kind of Run-Out you have................ So, care to send me a set of V blocks and a dial indicator? Sure, I'd have to make the v-blocks though. Bet if you posted in the Fl HTF you might find somebody in town that has a dial indicator though. Pretty common tool for anybody with a shop of any kind. They aren't that expensive. Goes without saying that you'd have to send 'em back to me. 
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Nobody calling you a liar. It's just so friggin weird! Some things I like to see in person, sorry. I just can't see a scope rotation occurring with no outside force...
About how much rotation would you say? 5°? 20°? Or does it just not look level every time you pick it up? Does it rotate the same direction consistently? |
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Just out of curiosity, does it always turn the same amount in the same time? And the same clock direction in the rings? If it is not consistent, I would be very suspicious of someone playing a prank if there is access by others to your equipment. I would like to know this as well. If it settles out at the same place each time I would guess something is oblonged. If it changes I would say you need a new lock on your door. |