I love hunting bunnies in front of beagles. As you know, the rabbits general work a circle when pushed by beagles. I like the "Looking Back Head Shot", when the rabbit is craning his head to look at it's back trail trying to get a fix on a short legged beagle. Always used a .22Lr and don't see a reason to change now.
If anyone else has had the pleasure of hunting rabbits with Beagles, it is quite an experience. Have been invited on these hunts before and could not believe the number of shots we got.
They actually do that and your reply reminded me of this. Many a shot could be taken with a .22 Short.
Be Safe !!!