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.
When hunting whitetails there are many different languages being spoken afield that I key on when outdoors. All these little creatures living around whitetails have something to tell us if we are willing to listen.
My favorite tattletales of the outdoors are a handful of little birds that live in my state of Ohio. Maybe yours too. A tip for the upcoming season.
There are Blue Jays, Cardinals, Chickadees, Killdeer, and Sparrows that all have language...