But in order to develop this ballistic chart, you have to know what your muzzle velocity is, from YOUR rifle, by use of a chronograph, OR, you must shoot YOUR gun at each of the ranges involved, if you have no chronograph. If you are just guessing at the muzzle velocity, then your ballistics chart is just a bunch of guesses, too! When you're aiming at thet trophy buck or bull elk is a poor time to discover you guessed wrong!!

Keep yore powder dry!!