Lapping "High end" scope rings?

[SDHNTR]

What I do when the receiver is way off, like on this gun, is I start with lapping only the lower halves. I get about halfway there first. Stopping to clean and taking note of the wear pattern often. Once I get to about 50-60% contact on the bottom halves, I then install the top halves and lap to 80-90% contact all around.

 

[SDHNTR]

Guessing the bottom clamps are also loose as you can see the rings (both) tilted to the left at the top, likely making them look worse.

Also i thought this thread was about “high end” rings?

Incorrect. The lower rings are not loose. They are torqued to spec.

As for the quality of the rings, unfortunately, there arent many options for a Ruger, and in my experience, the Leupold rings (these) are much better than the Ruger OEM ones. The Ruger ring mount system certainly lacks precision, but once trued up, it's as strong as anything out there. It's an integral “dovetail” with a recoil lug in each ring.

 

[BULLBLASTER]

Incorrect. The lower rings are not loose. They are torqued to spec.

As for the quality of the rings, unfortunately, there arent many options for a Ruger, and in my experience, the Leupold rings (these) are much better than the Ruger OEM ones. The Ruger ring mount system certainly lacks precision, but once trued up, it's as strong as anything out there. It's an integral dovetail with a recoil lug in each ring.

I stand corrected. The way the clamp is rotated makes it look like the rings are not seated. Guess the clamp rotated with torque

 

[SDHNTR]

Final check before scope install.

 

[Marshfly]

Makes note: don’t buy a Ruger M77.

Got it.

But seriously. That’s a perfect example of how a good lapping job can fix a pretty major deficiency @SDHNTR

 

[gbflyer]

Like I’ve said before, no need to argue about lapping. It’s your bent scope.

 

[Cdnance]

Hopefully some guys can chime in on this topic again.
What’s the consensus, to lap or not to lap?

 

[Randy11]

In general, do you guys tend to get worse ring marks after lapping? Or am I doing something wrong?

 

[wapitibob]

From what I have seen, If you get thru the anodizing on 7075 rings you would likely get some aluminum discoloration/deposits on the tube. You can also get marks from the dissimilar surface finish of lapped rings and the usually satin finish on the tube.

 

[Dan Carey]

You can always put the lapping bar in the rings and then tighten them down on the base. Gives yo the ability to check both ways. Just because the rings are on the base don't mean they are straight.

 

[Randy11]

You can always put the lapping bar in the rings and then tighten them down on the base. Gives yo the ability to check both ways. Just because the rings are on the base don't mean they are straight.

I had good luck doing this on the Ruger rings.

 

[Shortschaf]

I have a lapping bar set but have not used them

The alignment bars match up perfectly on my Seekins PMR and Sportsmatch rings so I left them alone