What ever happened to the (new) rimfire cartridges based on the larger rimfire case used for and in "Ram Set" guns? I have never seen the ammo for sale anywhere, and I have not seen any guns chambered for the round(s). Did it die already? I had hoped to get a carbine barrel for my Contender re-chambered in the .22 super mag for hunting coyotes on state land here in CT. Only rimfire rifles can be used on state land in CT.