There are only 2 that I know of, mine and now gendoc's. Both were rechambered by the same gunsmith and it seems we have each had the same luck with them. Mine actually shoots as good and perhaps a little better (if thats possible
) than my .22 WMR sportster that I use for coyotes and sometimes crows. Now it seems that history has repeated itself with gendoc's fine shooting .22 WMR Versa Pac, which shoots even better than his "sleeper" 10/22. These reamed out VP barrels are fantastic with the ammo they like. There are many uses for this combo....<><....
you are entirely welcome gendoc, and welcome to the club, there are two of us now.
With the 50 grain JHPs, or my favorites, JSP's, there is not much these fine compact guns could not cleanly take with an accurate shot. There might even be some use for solids out of the gun. A great barrel along with a 20 gauge in a pack for survival, foraging, or camping. You can carry a lot of .22 WMR ammo with little weight, and with a Survivor stock set on the reciever and the storearm forearm there is plenty of room to carry what you need....