In that class,you neglected 1 of the best lil cartridges I've ever used-the .22 K hornet. The hornet is kind of ho-hum due to being extremely finicky in accuracy/load development,but rechambering it to "K" makes it an entirely different critter. It's what the hornet should have been designed in the 1st place instead of simply loading the old winchester centerfire blackpowder cartridge with smokeless powder and calling it the hornet. Advantages to "K" are: brass can be fireformed by firing factory loaded hornet ammo,gain 300 fps,longer case life,easier extraction,more accurate,MUCH easier to find accurate load,and MUCH less finicky to load for without running into pressure issues which istypical with a lot of tiny cases.