Not exactly same yardage but I have went from 100 out to 600 yds. with same tuner setting without changing.600/1000 BR
Lets say you have the perfect tune for 600 yards. 30 seconds later you shoot a 1000 target. Did you / do you need to change your tuner?
My thought is no, but it is all voo-doo to me.
Thanks,
Tod