I would also suggest the one you shoot the best, and know the most about. Trajectory could be an issue with the .06 after a couple hundred yards, but if you are familiar with how it shoots then go for it.
Last week I killed this Roosevelt with my .270 shooting 130 grn Power Points. I had the option of a STW in 7mm and a 300 Win Short Mag, but I have used the .270 for more then a dozen years and I know it inside and out.
We all spend our time at the range, making sure our rifle is shooting just right. We get it dialed in, and then we head to the woods, ready to shoot our animal. Well, what happens if the animal comes out where you do not expect it? Will you be able to make the shot?
This scenario has happened to me. My first deer I ever shot, I had to shoot left handed. I had never practiced that way, and paid for it by having my nose broken with the scope. If I had just...