Shirley, you must be Joe King.
Sucks for SD.
All the arms that chamber it from the factory are blowback, so the neck gets worked and two or three reloads is the limit, even at moderate pressures. People have wildcatted it to .20 and .17 for varmint service in bolt guns, but they find that the tiny diameter of the extractor groove leads to loose primer pockets quickly, even with moderate loads.
9mm blows 5.7x28 away for half of what it was designed for. .223/5.56 blows it away for the other half.
The Hornet family is better for varmint service in bolt guns.
I guess if you want a slightly hotter 22WMR that's not a rimfire, there's a niche.
At least those are the conclusions I reached after getting really interested and researching the heck out of it.
