Re: 22 jet magnum
as closely all cartridge you can imp it as 22 Jet ackley imp that a nice imp gain on Jet because Jet have a big taper body and when fireform you get something close to 22/357 mag or 22/256 WIN mag
22 jet works not too bad but you need to use prefect clean and degraese case and clean chamber if you have greasy surface you case moove in chamber and lock cylinder
but shoulder case are not the best in revolver design gun .
22 Jet can be a nice conversion barrel in a TC or small Martini action .