MagMan
Well-Known Member
Beat up a nice Swarovski on a 300 RUM because of it.
That's probably what happened.The purpose of lapping is to remove mis-alignment in the rings. If the rings are manufactured a might to large a diameter it is possible to lap out any squeeze they have on the scope.
If things don't work out for you I'll give you an option that always works for me which is the Burris Signature rings with the plastic inserts that auto align the scope meaning you don't need to lap rings. I also stick a piece of golf grip tape under the top inserts (so the inserts are stuck to the scope). I've never had a scope slide with this setup and I've got 15 long guns with most of them setup this way.
I'll second JE' s thoughts on that. I believe you honed away the grip on your rings. You can get carried away with that quite easily. On weaver type , or picatinny rails, I like the LEUPOLD rings. The cross slot fits the groove rather snuggly, and haven't had isdues with slippage either.Sounds to me like you over lapped the rings allowing the scope to slip.
You may have to replace the rings, because as stated, the scope should not move from the recoil of a 7mm mag.
Buy a top end set of rings and bases (The weaver style has smaller cross pins and more slack, allowing for more misalignment) and reaming will not be necessary to prevent slipping and marking the scope.
Just My opinion
J E CUSTOM
OuchBeat up a nice Swarovski on a 300 RUM because of it.
Years ago, I used to use, almost exclusively, Leupolds dual dove tail rings and bases. They align great, don't slip.
Sand bag(s).
I believe I may have over torqued the cross bolts because I used the "dry threads" number with Loctite.
Hopefully, I will make it to the range early next week.
There is still plenty of space between the top clamp and the bottom half of the ring. I don't believe I over -lapped the rings.That's probably what happened.
The rings are made to fit a certain size, so lapping is only going to make them bigger. It's easy to over do things, trying to make them "better".
I'd forget about the Loctite and the lapping and just put the parts together.
It works for the vast majority of set-ups.
Back, long ago (yes, we had electricity then) I attended a class on fasteners that included proper torqueing techniques for bolts of many types. One fact often overlooked by folks is the listed torque values in most sources are for dry threads. Most thread engagement rarely goes over 75%. Adding a "lubricant" of any type (including thread locking compound) should lower the torque value by at least 10%.Here are some recommended torque values that May help.
https://www.longrangehunting.com/threads/torque-recomendations.29756/
These are based on the screw size and the material.
J E CUSTOM
Some are in the know. I won't setup rings without it anymore.I have had great success with the Rosin.