17 HMR.
Do you have exclusive use of this ranch? If not watch out for other hunters and don't mess up their antelope hunt. Nothing like making a stalk on a good buck and some dog shooters pile out of a truck and start shooting right over the rise.
If you're exclusive take more than one rifle, the barrels will get hot.
I wouldn't handle any of them either, they can carry the plague and it's not uncommon.
