Last year a bought a caliber adapter from MCA Sports.You can fire a 22.lr
in a .223.It works great,I load it with Agiula 60grn subsonic rounds!In my rifle with a 1-9 twsit,it is very accurate!Now I have a 6mm-284 with a
1-10 and MCA sports says they can make custom chamber adapters.If I can find a subsonic cartridge I can shoot up to 100grn's.More power More range than the .22.