Jack D is correct, some guns shoot the sight base screws loose after a hundred rounds or more, my first indication is when I start getting misfires it's time to get out the Allen wrench and tighten things down, then go right back to hitting tiny targets at distance and amazing your friends. My Buckmark has well over 80,000 rounds through it, when I die there's going to be a heckuva fight over who gets it, my kids LOVE that gun because it made them look good so often. It also feels like it was made for nearly any hand. I bought the Plus version with the Rosewood grips 20+ years ago, and the wife was peeved about the price.........until she shot it. Then (nearly) all was forgiven.
I kept the gun and ditched the wife..........once of my better decisions. :bandit:
Glad I could be of some help, Gary! I think they're one of the unsung bargains in the shooting world.