I have shot a few rabbits with my bow. I guess ours are more cottontails than jackrabbits but those G5 Small Game Heads work the best of anything I have ever used. Every rabbit I have shot with them has dropped quickly and of the last 5 only one needed to be finished off.
Get out there and get into them its great fun and depending on how much they are hunted it can be great stalking practice too.
This was the first thing I shot with my 82nd when i got it.