If the rings are parallel with the bore the setup is not correct. The two axes must coincide. I think Peter's books give the details.
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If the rings are parallel with the bore the setup is not correct. The two axes must coincide. I think Peter's books give the details.
https://www.milsurps.com/showthread.php?t=54372
I thought I remembered you jsne. ;)
Alright, so your lead screw may have been cut down from a windage screw, but not done correctly. That may be all the problem, or it may not be.
The point about the setting up of the mounts is...
As best I can make out from your comment, if you are using a replica "T" or bracket or both, it could be your set up is not properly done so that there is insufficient travel in the lead screw to...