Chim is our resident BuckMark expert and will be by in a while to more thoroughly answer your question. With my limited knowledge, if you don't have to move your sight as it sits on the barrel rail then the point of impact shouldn't change. That is what is nice about the Brownings, assuming that you don't have to remove the sight to get to the back screw.I recently purchased a Buckmark Hunter and am very happy with it. I installed a Bass Pro red dot sight which appears to finally enable me to see the sights with my old eyes. When we were young, we enjoyed shooting, so I am happy to get back in the game.
My question is that several have made the statement that the less expensive Buckmarks were not as accurate. I notice that the parts seem to be the same in both the less and more expensive guns except for triggers. Is there really an edge in accuracy with a more expensive pistol?
Also, several object to removing the top rail during cleaning and state it that it leads to changes in accuracy. I only have to remove the back rail and barrel screws to completely strip down. It doesn't appear to change the accuracy much or at all when this is done. The red dot stays on the barrel/rib assembly during the tear down. Is the change in point of impact really affected?
I set up my old Challenger with a Red Dot sight and I can remove the barrel with no change in the point of impact.