The .25-‘06 shooting 100gr Barnes TTSX bullets isn’t just “good” for hunting mule deer. It’s one of the absolute best combos you can choose.
I know so many people that use this in Montana, Wyoming, Idaho, Washington and Oregon. Very flat-shooting and with very little recoil, accuracy is superb for shots on game out to as far as you’d ethically want to shoot.
It’s a wicked killer, too.