The Hornet is a great little round. It will make the .17 HMR look like a pellet gun. Dont understand what the .17 HMR is even for.
The Hornet is legal for deer here in Texas, but it is on the small side. It makes 4/5 the power of a .222 with half the powder.
Its definately not a rabbit gun. I shot a rabbitt with mine and it literally exploded.
I use it for deer in certain urban areas I hunt. I put it right dead center of the neck and they drop on the spot. I took this big guy last year with a 15 yd shot to the neck, and he dropped on the spot.