How critical is aiming error?
- The key factors are distance from the chronograph to the
target and bullet speed. A load with a true velocity of 1250
ft/s over the sensors, and with the chronograph aimed one
yard too high at 100 yards, will give a reading of 1257 ft/s.
This deviation increases with bullet speed. A bullet
travelling at 3350 ft/t with the same aiming error will result
in a reading of 3451 ft/s. The deviation is 101 ft/s and
accuracy is 97%. Reduce aiming error to one foot, and
deviation is reduced to 33 ft/s and precision increased to
99%. The sights on the SuperChrono are designed to be
precise. With a little practice, you will soon be able to aim it
to achieve close to the system accuracy of 99.5%.