Or, you could buy a CZ .22 Hornet and do this at 100 meters - all day. Those 40gr. HP's, by Sierra and Barnes have never grouped over 3/8" using 14.0gr. to 14.4gr. Lil'Gun and pistol primers.

My new one is not as accurate, but I was also using what are normally less accurate bullets, 45gr. Semi round nose and 40gr. Sp. I got the 3 shot and 4 shot groups mixed. LOL

These groups were with the Lux, Euro model, 23.4" light weight barrel and 6.5-20X44 Simmons .44 mag scope.