rocker, nice looking rifle there. i think that most any of the 22WMR ammo will probably work fine for your task at hand as long as it's accurate and you have good shot placement. i also believe it's much better suited for hunting than the 17hmr round. i have a savage M93r17 and love it, but i got mine for more of a target shooting rimfire, and if i had wanted one for hunting smaller game, i would have went with a 22WMR rifle. just find the heaviest and most accurate ammo for your rifle, and you should do fine.
i too have noticed the red box and blue box ammo. maybe newer labeling? not for sure on that one.
i too have noticed the red box and blue box ammo. maybe newer labeling? not for sure on that one.