A conventional chronograph only measures velocity near the muzzle. The BC Chrono™ System measures both muzzle velocity and the time-of-flight from gun to distant target. An accurate ballistic coefficient requires both measurements. The System 89 makes both measurements and computes the exact BC for your ammo and your gun. The System 89 measures the calibrated ballistic coefficient for each bullet fired. At very long ranges, the shot-to-shot uniformity of the ballistic coefficient becomes even more important than uniform muzzle velocity. Shooters find uniformity of ballistic coefficient and muzzle velocity is more important than simply looking for highest velocity and BC. The System 89 measures the uniformity of both muzzle velocity and ballistic coefficient so that you can select the most accurate loads.
We have purchased/invested in an Oehler 89 Ballistic Chronograph and can continue our never-ending testing and research. If you or your company need measured guaranteed ballistic coefficients for purpose-built weapon systems, we can help. Often, G7 BC's labeled for certain companies are not representing the true BC but one measured at the muzzle. Perhaps the barrel you have is on the downhill side of its lifespan, you can know for sure if your BC & SD is getting worse which can lead to undesirable vertical stringing.
We have a venue that will allow for testing much further than most any other company can get BC's out to 3 miles (5280 yards)