Just thought I would put my two cents in. I'm going to agree with the previous and say that if you had to use a rimfire..use a .17. at least then IF your an awsome shot....you'd have a chance. 22-250, 223...take your pick. Personally I don't like to see things suffer. Here it is legal to use a small caliber rifle for a few things that woudn't nessecarily go down quick from it. Just something to think about....

turk