There's a myth that you have to shoot farther out here. Make no mistake, there are going to be longer shot opportunities, particularly on the prairies & Badlands of SD, ND, MT, WY, CO, because you can see the critters farther than in the cover of eastern states.
The question you have to ask is are you proficent at the longer shots, and do you really want to take them.
It's been my experience that with some patience, skill, and a touch of luck, you can almost always get shots in the ranges you are comfortable in. This is particularly true when spotting & stalking bedded mule bucks...