I don't dry fire often with my 41 ( I do with my Walther GSP), but when I do I use a plastic drywall anchor in the chamber. My LHS (local hardware store) sells them individually or in a box of 100. The 100 count box retails for $5.49. They are made by Hillman, but others should work. I use the yellow ones, which I think are for a number 6 to 8 screw. I don't remember who to give the credit to for this idea. I gave a few to my LGS to try, and they bought a box of 100 so they could give out a few with each .22 rimfire sold.