Re: drop chart and chronograph drop chart
+1 for Mike33
If you have 5 different Chronographs you're going to have 5 different readings even if you shoot through all 5 with the same bullet.
I went through the time and wasted money to figure this out. What matters is where the bullet actually hits. I wouldn't even mess around with the MV and just do like someone suggested and shoot at different ranges, mark your MOA's and go to work on your pc.
I'd suggest keeping with the b.c and adjust the MV to accommodate your hits, after all it's not about speed. I've found this to be a fail proof system even if the MV may sound a little off. Most guys like to publish the velocity for bragging purposes but that doesn't bother me one bit.
I just happen to use the Berger 210 in my RUM and when I tested the points of impact at various ranges, my Exbal software showed my velocity at 3090 fps, my Chrony was 85 fps off. Which do you think I'll follow?
My final authority in all matters of faith and practice is the King James Bible. It's still the monarch of books!!