Rifle Scopes Ring Lapping?

[Psycho-82]

Ive recently purchased a LaRue SPRE QD Mount and was wondering if you need to lap these rings as you do 2 piece seperate rings? Information on if its done differently compared to lateral mount rings or not would be much appreciated, thanks in advance.

 

[Witch_Doctor]

Re: Ring Lapping?

Don't need to lap Larue rings.

 

[trukreltrog]

Re: Ring Lapping?

LaRue is good to go, no Lappin needed.

 

[Psycho-82]

Re: Ring Lapping?

Thanks for the info gents.

 

[CSTactical]

Re: Ring Lapping?

Because they are split rigs they float and you will not need to lap them.

Mike @ CST

 

[Boogyman]

Re: Ring Lapping?

Psyco what kind of action?

 

[Barney88PDC]

Re: Ring Lapping?

Not to hijack but I think the OP question has been answered. What about Leupold Mark 4 rings?

 

[Barney88PDC]

Re: Ring Lapping?

Anyone?

 

[Witch_Doctor]

Re: Ring Lapping?

I haven't needed to on the rings I installed.

 

[pharm762]

Re: Ring Lapping?

I didn't lap my Badger rings and they are just fine.

 

[TresMon]

Re: Ring Lapping?

Leave it to me to throw a stick into the spokes.

Unless you have a machine shop gauge lab full of measuring junk, you HAVE NO WAY OF KNOWING if rings need to be lapped until you go to lap them.

How can you say "mine were fine, no need for lapping" without lapping them? Do you have laser mic eyes? Are your fingers a line bore indicator?

Take a lapping bar and do a light lap on the rings. If the bluing or anodize start wearing through in a totally even and consistent pattern- you good to go. Stop. If no, lap them to 90% or so clean up.

And no "split rings" are not dissmissed either- they can bind a scope as they clamp on the mounting rail if not machined perfectly.....

FWIW. You happy, Me happy.
Tres

 

[Witch_Doctor]

Re: Ring Lapping?

There is a fine line between attention to detail and obsessive. If you are going to run a lapping bar across a finished product from a quality manufacture, what are you actually removing 0.001 of exterior finish. I don't see where that helps. You would be better off just bedding the scope base.

 

[TresMon]

Re: Ring Lapping?



I have lapped a bunch of rings. Best I can tell it a toss up if rings are right or not by the time you put these rings on on that base. Granted the incidence is lower on high end brands but THERE IS NO guarantee.

 

[00037]

Re: Ring Lapping?

Since scope rings aren't used to create a seal (like on four-stroke cylinder valves), what's the purpose of lapping properly-machined (and torqued) scope rings?

 

[TresMon]

Re: Ring Lapping?



If you ever see a scope tube that was crushed into here and there from misalighned, well machined rings you'll understand. Thats the extreme end. On the average end, as the rings are snugged up the scope tube is flexed or bowed and held in that constant strain.