;)ballistx, a guy could rechamber the .222 to 223, but lots of .222 brass is still floating around....I am not sure how much 222 brass I still have...but right now I have more 223 brass...but both of them last forever...I am not sure what your varmiting situation is in New Mex. but here most of the high volume prairie dogs shooting is tied up with outfitters...what is left is spotty on private land, and the public land is really hammered..so instead of shooting several thousand rds. at p. dogs each summer, I am lucky if I shoot 500....if I shot gophers with my centerfires it would burn up much more ammo, but I mostly use my .22 rifles for that otherwise, they would never get any use...I am like you, I have the .223, but the .222 is more nostalgic,,,, lots of varmits have gone down to that little round...hope you have lots to shoot at this summer....For the low volume shooting I am doing now, the ,222 brass will last long enough....