If the guide is saying he can put you on a good buck for certain but you have to be able to shoot at least 500 yards it's because he's got a honey hole and you just can't hunt that spot any other way. From what I gather the guide isn't saying you have to be able to kill at those ranges but if you want a sure chance at an above average buck this is what it's going to take. The guide also isn't saying he can't put him on a deer at closer range, just if he can shoot that far it opens up a really good option.
