Scope rings - lapping or tape it

I'd make or buy a precise steel mandrel the diameter of the scope tube. I found a hardened and ground shaft for this purpose about 12" long. A steel mandrel will allow you to set the mounts in place and torque the bases and caps, remove the mandrel and caps to install the scope without bending/twisting the scope's tube, and can even be used to lap the rings with it.

McMaster Carr will have the lapping shaft you need in either soft or hardened. Wheeler also makes lapping kits but they are not hardened.

Do high quality rings really need lapping? How much is your ring budget?

Mr.H said:

Do high quality rings really need lapping? How much is your ring budget?

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Before the rings are lapped, they are mounted securely on the rifle in their intended position. Subsequent lapping compensates for any misalignment in the system, not just the scope rings. If you mount those rings on a different rifle, they should be lapped again after moving them.

To much work to lap rings and they may still mar the scope tube. I used these now. They include a set if plastic inserts that allow you to adjust the scopes alinement to the bore.

BURRIS Xtreme Signature Tactical​

I know the Burris Xtreme Signature rings are supposed to be awesome but in my opinion they are the most gawdy, ugly, heavy rings I’ve ever seen. Your opinion my vary.

rcs9250 said:

McMaster Carr will have the lapping shaft you need in either soft or hardened. Wheeler also makes lapping kits but they are not hardened.

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I second the wheeler kit. Pretty well put together if you need to go to that level. Alot of folks will tell you to not waste time with two piece rings and to buy a single piece design. This essentially rules out misalignment and lapping needs.

rcs9250 said:

I know the Burris Xtreme Signature rings are supposed be awesome but in my opinion they are the most gawdy, ugly, heavy rings I’ve ever seen. Your opinion my vary.

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I agree they are heavier and bulkier than needed and cost too much, but to ensure that the scope tube isn't marred or damaged in any way plus the adjustability take priority over looks. Function over form. I don't trust cheap rings to be aligned and dimensioned correctly. You have a better chance with both rings and base all connected as one piece. If I'm mounting a < $200 who cares, if mounting any scope > $500 I care. If mounting a > $2K scope you better get some damn good rings or lap decent ones!

"BURRIS Xtreme Signature Tactical"
I have used these mounts (still do) and really like them, they do not mar the scope and can be used to give more MOA or even some side-to-side issues. They come in various thickness' and are semi-parabolic in nature to 'center' the scope within the metal housing.
As long as you check to see that the scope is aligned with the bore, you're good.
Truly, they are not all that expensive when compared to the REALLY expensive mounts out there.
They are hell for stout that's for sure. Three screws on either side of the top straps.
They do make a set that is smaller, with a single screw on the top strap, but to me they are too flimsy.

Mike

Even with quality rings I check for alignment. Mistakes happen all too often these days.

So you but quality rings and then open them up by lapping. I have been involved in this debate for years with PB. You would think its the Holy Grail to become a winner. To me an over 50 year competitive shooter it defies common sense and logic. But if it trips your trigger go for it. I do tape the bottom half of rings if a lot of recoil is present and have never had a scope slip. Burris rings with inserts have become my go to rings except for 34mm tunes. For those I by Barrel rings. You lap your rings, I will spend that time practicing and improving my skills.

Well, if you REALLY want your rings perfect, you'll need to mount them then CMM the rings to the bore and then adjust the mounting surface accordingly and the rings. IMHO it's a wee bit overkill. BUT it would be interesting.