Say that I live in Montana and do all my shooting here. (This would limit elevation changes to between 3000 feet and 5000 feet)
Given an optimum cartridge/bullet combination in a very accurate rifle and a good scope, a hand held wind gauge, good drop tables and an excellent scope, how far could 90% first hits on an 8" diameter target be expected before you would start having to use a computer program for barometric pressure, altitude, etc?
Another assumption is that no shooting would be done with winds in excess of ten MPH. Also, range finder would, of course be used.
Trying to take the shooter out of the equation here to see at what range the need for a ballistics program/portable computer kicks in.

Thanks

Fred