Thread: Lapping

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.

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.