Hal Swiggett was of the opinion that 22 magnum out of a 6" revolver barrel was about equal to 22 lr from a rifle barrel. Elmer Keith preferred his J Frame kit gun to be chambered in 22 magnum. I like 22 magnum revolvers, semi auto pistols and lever action Winchester rifles. I like 22 lr chambered guns too. The magnum round is a good performer in most guns chambered for it. I tried a Grendel P-30 once or twice. Let's hope the Kel Tec version functions properly.