Start here: SA-22 Rifle Scope Base - Browning
Find a qualified gunsmith to put this on your gun. Contrary to what most people think, you don’t have to drill/tap very deep to mount a cantilever mount on a rimfire barrel. It only takes 2.5-3 threads to securely attach the mount to the barrel. I’ve put this type of mount on a target rifle I had and it worked very well and I never had a problem with it.
Find a qualified gunsmith to put this on your gun. Contrary to what most people think, you don’t have to drill/tap very deep to mount a cantilever mount on a rimfire barrel. It only takes 2.5-3 threads to securely attach the mount to the barrel. I’ve put this type of mount on a target rifle I had and it worked very well and I never had a problem with it.