I've thought about having one made up. I think of it as a 22 hornet on steroids
The .22 Hornet is far more powerful than the 5.7, in both a Contender pistol, and in a rifle. The 5.7 burns around 7gr of pistol powders like AA 5, 7, or 9. The Hornet uses 13gr of Lil Gun, 11-12gr of H110 and similar charges of other slow-burning pistol/fast-burning rifle powders.
Just acquired a 5.7 pistol, a S&W with a locked-breech gas-operated action. I don’t expect any ballistic magic from that locked-breech, but am hoping it is easier on brass. Reviews suggest it does reduce recoil somewhat, but I don’t have another pistol to compare. Maybe S&W will use that action in a carbine; they’ve been pretty busy with trendy stuff of late.
