Cooper model 22

I have an M22 Classic in .25/06 with a nice french walnut stock. It has proven very accurate with the 115 grain Nosler Ballistic Tip the best bullet I tried. Regarding your broken bolt stop - I recommend you contact Cooper and get their advice on the best solution. My contacts with them have all been very good and expect they will point you in the right direction (if you don't already have a plan).