Just picked up a new to me 73. The only indication I could find that it had been fired or at least loaded was a little bit of bluing missing on the front edge of the loading gate. Bolt face and extractor don't show any sign of handling any cartridges. For all practical purposes it looks new.
The trigger is pretty stout. I figured someone hear could give some suggestions on spring kits etc. If that would lower the trigger pull some it might be about right, otherwise I might have to stone it.
Bob