I never used a RF until a few years ago. for me its always been a situation that the deer was in range or it wasn't as my max was rather close, so whether the deer was 14,17, 20 yds, who cares.
I went out west and bought one and would range some objects at my setups.
I still use my RF now back east, but again its only to hit some trees logs etc to determine what's "in" and what's "out".