Frustrated: Velocity Variance Huge

[Joe R]

I've only had two chronographs a Oehler 35P AND A Labradar so my experience is limited.

The first thing I do when I get a new chrono is verify that it is working properly. I've generally found someone else at the range that is just as eager as me to verify the accuracy of their chronograph. If I were to get that kind of variance on my ammo that's the first thing I'd check.

But, like Donovan as already stated you also have to maintain all the other variables constant to have comparable data. If the aren't constant, well... than you have to start from the beginning and eliminate each variable.

At the end of the day its all about what is happening on target. That's your biggest clue indicator.

Joe

 

[mongo chicago]

Joe R is correct. It's what's happening on the target that matters most. I only use the velocities to calculate the path for getting on paper at longer distances. Then fine tune the dialing in. Heck, Winchester factory Ranger "sniper" ammo had more than 150 fps velocity variance back when I chronographed them.