Zincpoint has .22 ammo for .06 cents a round. I have tried this and it goes bang and in my old Western Field .22 it is more accurate than I am. Go check it out here:https://zincpoint.com/rifle-ammo/22-long-rifle/. My Ruger .22 seems to like them a lot even though it is the most picky of all my .22 hand guns.
I have bought small pistol primers from them and they all go bang.
ACC