Originally Posted by eric2381
I am having trouble getting my head around it, because- Do I trust the advertised BC? Or do I trust the chronograph?
The help is greatly appreciated.
I've built a dual chronograph setup, and since using it, would never go back and rely on a single chronograph for establishing MVs. I use one Oehler 33 and one PACT, with skyscreens set up on a single rail at 4.5' and 5' skyscreen spacing. This allows me to confirm I'm getting good data. There have been quite a few instances where I have ID'd bad data from one chrono of the other. If the difference in measured velocity is unusually high or low between the two, I know I've thrown a bogus number on one or the other.
With all the time and effort that goes into establishing a reliable drop chart, the last thing I want to do is start the process with bogus MVs.