This is a custom 50 cal MZLDR I have been working on not my new .22 but will work for demonstration.

Putting the rifle in a vice I first level the ring top


This puts the rifle level with the black grid lines on the wall. I use these to square the cross hairs later.


This is the jig that I use to allign the front ring to the bore centerline. It is a long length of 1" CRS drilled and tapped for a hollow 1/4 20 set screw into a nylon line and a brass plumb bob is inserted


Here you can see the front is now on bore centerline


The pointed rear of the long centerline jig makes checking in the rear easy also.



Then align the rear ring with the front I like to use the flat ends of my point jigs as this gives me far more eyeball area


Then lap the rings in with a drill and 220 compound


The lap is just 1" CRS with a groove I cut to hold the lapping compound drilled and tapped 3/8 16 with a long drill shank I made from welding a bolt to drillrod.


I then clean up the rings,oil the inside and drop in the scope aligning the scope with the level grid on the far wall. Tourqe up screws to german specifications (Goodantight) and your done.

Thanks Ted. Well thought out.