A shot to the chest area of a rabbit will drop a rabbit as quick as a head shot, and in most cases stands less chance of bouncing off thick bone, which can and does happen from time to time with headshots.
I will take your word on that one. I didn't spend long hunting rabbits with an air rifle, my rimfire followed PDQ. Back then, everyone I spoke to said to me to keep it to head shots. I did, and it did work fine.
Logun - If you take a rabbit and a fox, a fox is about 10 times the weight of a rabbit (roughly!), and a 22LR has (roughly!) 10x the power at the muzzle. The ranges are the s