Question on ballistic app data inputs

[jackwagon]

To get real good data... might as well admit it... try to get a chrono. I know there are several but I use a magnetospeed and it's been super.
And range-friendly and sun/clouds-INsensitive.
Barrels can and do differ, I have 1 18"-er that's fast (the Amax and SST's run 2510 in mine) but the Hdy Black runs slower, I don't know why but that's what it is.
So the chrono is really worth it to you. Especially if you want to reload.
Just a thought.

Thanks guys. A chronograph is on my list, but as i'm heading to the 750 yd range this weekend I thought I would try to get the data a little closer .