Would the Oehler be the answer?
@Buford Boone
Oehler Research Ballistic Coefficient Chronograph The System 89 measures the calibrated ballistic coefficient for each bullet fired. At very long ranges, the shot-to-shot uniformity of the […]
oehler-research.com
Yes, kind of.
The '89 measures time of flight (TOF) and will report BC in multiple drag functions. Some target configurations report velocity at the target but it is a calculated velocity based on a measured TOF and the drag function you chose. Changing drag functions can (usually will) result in a changed target velocity. Once you shoot, you can compare multiple drag functions for that test without re-shooting.
If the drag function is a good match for your bullet, the velocity reported should be very close to actual - certainly close enough to determine if it is within the window for terminal performance.
If you use it to match TOF on a Radar Measured Drag Function, you are comparing your bullet to the same model of bullet measured by the manufacturer, using radar. That should give the best prediciton if you are within the distance they actually measured. What I call "Medium Range Radar" will track a .30 cal bullet about (varies with terrain, etc.) 1800 meters. All performance beyond that is estimated.
The '89 will work in supersonic and subsonic. The farthest I've used it is 2 miles. Currently, the limit is 10 seconds TOF. That, obviously, is subsonic, requiring an impact target. We have screwed three sheets of plywood together to create an 8' x 12' target - much easier to hit at distance.
Dr. Oehler told one guy that requested a longer TOF "If you bring me data showing you have a 50% hit percentage at 9 seconds TOF, we will increase the TOF allowed.
The '89 is battery operated and easy to use. It does, however, require a laptop. It used to require skyscreens - not anymore. Works awesome with a Garmin.
The '89 data is independent of many of the errors that can be found with impact location (Shooter, precision capability of system, cant, AJ, etc.)
It is a bit of an investment, about $3,000, but will do what nothing else affordable does.