Personally SharpShooter.. if I lived where you did, I would go with the .58 caliber. I am not saying that the .54 caliber would not take care of your business, but when hunting large animals, I like to push as much lead into them as I can. The .54 caliber roundball I cast weights 224 grains. The .58 roundball is 284 grains. That means your pushing 25% more lead down range. Also these Green Mountian Barrels you're looking at, I shoot 100 grains, but I can push it to actually 115 grains and still keep accuracy. There just is no need for me to shoot that large of a charge at a white tail. The 100 grain Goex 2f charge is plenty.