OP - what exactly are you looking to do? It seems like there's some confusion in the replies.
I took it to mean - you want to know what your bullet speed is at say 500 yards. How are people arriving at that, 2nd chrono or what? (nothing to do with what you dial to get to 500 yards with a 100yd zero)
Or are you looking to build a dope sheet for scope adjustments out to 500 yards with only MV?
