For the past several years I have used the same outfitter and guide in NM for elk. At the beginning of the my first hunt, the guide stated that if I drew blood, he will do everything possible to find my animal. But if we fail to find the animal, my tag is considered filled. I completely agree with his position. I suggest you have a good talk with your guide BEFORE going to the woods. Tell him your effective range, and what size animal you are interested in. And carry your own range finder and binos. Most guides are pretty good at yardage estimation, but some are terrible. If you know your rifle, know the range, and have previously discussed your shooting abilities with the guide, I doubt you will have any problems. If you tell him that you will not take a shot over 300 yards, it has been my experience that the guide will get you within that 300 yard mark. Just my experience!
Good Hunting,
Hal