Phil, I've only ever used Talley's on Tikka's and none so far have needed to be lapped. Interestingly, I read some time back, about a U.S. gunsmith who specialized in high accuracy firearm work, state that he'd never had to true up a Sako or Tikka action with the barrel whereas he had to so on almost all U.S. brand commercial rifles (not custom actions).
I've seen some shocking examples of Winchester and Remington rifles with out of alignment screw holes for mount bases too.
Bookmarks