Thread: Lapping

Who laps their scope rings. I've done a couple lately and it's surprising how much they were out.

done a couple of sets, I use a straight edge ( ruler ) to line them up first which helps a little

I think there are some types of rings that shouldn't be lapped so beware of that

I use weavers. Don't know if it helps anything but at least the scope's not trying to bend

Lap lappity lap lap for me. Mostly Talleys so pretty easy.

Only ever lapped some cheap Shit rings on a cheap Shit rifle.
they were out a lot.
Otherwise I don't bother.

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For my 1 inch rings I cut 2 pieces of 1 inch shafting about 3 1/2 inches then I turned one end of each piece to a taper point. With lower part of rings in place on rifle put pieces of shaft on to rings with points facing each other. Any misalignment will show by the points not quite lining up.

To lap rings I got a piece of 25 mm shafting then when I wrap a piece of wet and dry paper around it it makes it up to 1 inch and I use it to lap the rings.

I use warnes now - don't need to lap.
I have a lapping set of tools if anyone needs to borrow.
ChCh based.

Originally Posted by Barny Rubble

For my 1 inch rings I cut 2 pieces of 1 inch shafting about 3 1/2 inches then I turned one end of each piece to a taper point. With lower part of rings in place on rifle put pieces of shaft on to rings with points facing each other.

I've wondered about the pointed approach. What if the points meet but one of the rings is slightly lower, higher or laterally off?

There are ring reaming tools available that are turned with a spanner once the rings are mounted. After lapping or reaming, the rings should be indexed.

Rings such as Sako Optilocks that have a plastic insert shouldn't be lapped.

Lap all the way... All the rings I've lapped we're out, some by a lot. Never kept count, but with my rifles and mates I've done it for it would be in excess of 50+ sets of rings... And as I said, all of them were out.

Kj

Never had to lap any saddle mount rings for my blaser.
Their design alone almost ensures their alignment.
Germans are sharp.

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The scope doesn't have to be perfectly aligned to the bore. In an ideal world it would be...but in the real world a few fractions out won't make any real difference as long as it's sighted in at a decent distance i.e. If it was out by heaps, let's say an entire MOA, then if you zeroed it at 500y, it would only be an inch out at 100y. Hardly worth worrying about, and you would never be an entire MOA out unless it was a Norinco or something similar?


Kj

Edits, tired and mental math no good tonight.

More of a concern than having the base out of alignment to the bore is one base that is lower or higher than the other base. This could be the result of the mount base or the rifle receiver. Of course shimming the lower base is one way to fix this.

There must be a lot of scopes out there that have bent tubes because they were mounted on rifles with variations in height of the rings that no amount of lapping could correct.