I do not own a chrono. And from what I have gathered they are very finicky and only provide the shooter with a warm and fuzzy, not accurate muzzle velocity. I agree Tim K that I need to find an effective working program. Writing down dope works great when your going to the same range with same elevation, temperature, humidity, etc, etc. However gathering dope the old fashion way does me know justice if say I want to shoot effectively as a competitor at multiple different ranges.

I suppose the Chrono will get me in the ballpark and I can tweak MV from there to get the right bullet drop out of my ballistic program, but I have literally inputted MV from 2300fps at 10fps intervals all the way up to 2800fps and nothing matches my actual dope(along with tweaking BC). It seems the only effective way is to find a program that allows me to input a hand full of known distances and there corresponding drop, and let the computer do the rest. I don't even know if such a program exists, I guess nothing beats just getting my ass out to the range and practicing. I am just trying to avoid wasting money and time doing something the wrong way. Just trying to figure out how guys are getting drop charts in their ballistic programs that are getting them within a few inches at 1000yds.

TIM K I am using Hornady Match Brass, 48.5gr WIN 760(its all I can find), 155gr BTHP Nosler Custom Competition with BC of .45.
And if BC is different at varying speeds then who knows what it actually is.

Maybe I am just over thinking.