On the Buckmark, here's what it says in the FAQ section on Rimfirecentral:
"Can I safely dry fire my Buck Mark?
There have been confirmed instances on this forum of guns that absolutely can be dry fired without a problem. There are also some instances of barrels that definitely have been damaged by dry firing the gun. This contradiction is most likely caused by small differences in firing pin length. To see if your gun can be safely dry fired, you can insert a piece of paper between the slide and barrel and pull the trigger. If you see a dent in the paper, you should probably use snap caps. If not, then you are probably safe. My gun did pass this paper test, but I still use snap caps just in case."