|I've shot about 300 rounds through my Buck Mark with these sights so far on an indoor range, and I like the smaller rear sight notch but hate the lack of a positive windage adjustment.
After painstakingly sighting the windage in from 5 to 25 yards, over a hundred rounds in bench rested groups, I finally had it dead nuts accurate and went to offhand shooting. After another 30 rounds my groups started wandering to the right. I thought it might need another tweaking, but found that the windage screw had shot loose and the dovetail was sliding all around.
I put some blue loc-tite on the end of the windage screw and let a little get on the dovetail base, but had a heck of a time loosening it for subsequent re-sighting.
The Buck Mark is accurate enough to drive tacks if you get the sights right. The gun deserves the best sights you can put on it.
I carry my Buck Mark in a fanny pack and worry about the windage sliding, or being pushed off true. I wish they would have just put the extra effort into a decent 'clicking' windage adjustment screw.