Re: Lapping required??
Nightforce Manual
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Nightforce_Manual</div><div class="ubbcode-body">Most production rifle actions or ring and base combinations are not manufactured accurately enough to ensure proper alignment out of the box. After properly securing bases and rings to the action, alignment and compression of the rings is required prior to mounting the riflescope. To fulfill this requirement a 30mm lapping bar kit is available from Nightforce or other suppliers of precision shooting products. This lapping bar kit consists of a steel bar 30mm in diameter with a handle attached and a nonimbedding lapping compound. This tool is used to remove unnecessary material from the lower halves of the rings eliminating misalignment. This procedure allows both rings to align with one another, thus creating a stress-free platform for the riflescope.
<span style="text-decoration: underline"><span style="font-weight: bold">Step One</span></span>
With bases and lower halves of the rings securely mounted to the rifle, mount the 30mm steel lapping bar and tighten top ring
halves. This procedure will cause the rings to compress and take set to the lapping bar instead of the tube body of the riflescope.
Do not use the riflescope in place of the steel lapping bar.
<span style="text-decoration: underline"><span style="font-weight: bold">Step Two</span></span>
Remove the lapping bar and apply lapping compound to the lower ring halves. Perform lapping procedure until a maximum of 75% of
the surface area has been lapped of the lower ring halves. (Note: or until the bar moves freely. i.e. no binding halves.)
<span style="text-decoration: underline"><span style="font-weight: bold">Step Three</span></span>
Remove the lapping bar and clean all surfaces with alcohol or other solvent to ensure an oil free surface.</div></div>
I do it "just cause..." if that makes me wrong, I can live with that.