Big Canadian Jacks

I was out around christmas jack rabbit hunting in southern ontario. I shot and shot at more jacks in 3 days than I have in a couple years. Its unreal how muchy the population went up. We got two the first day, 6 the second day and 7 the third day, all out of one concession block of orchard. All this and the dog wasnt really interested after the second afternoon (getting kinda old). Anyways, I think I need a rifle for this game. I like the 220 swift, but is it to big for jacks?. Keep in mind this gun will double duty for fox and Coyotes.