OK guys, I just ran the Vortex LRBC. I've had pretty good luck with this ballistic calculator on three other Vortex scopes, including a muzzleloader project and it's been amazingly accurate compared to actual range results.
For those just getting here, part of the reason for the change up was that my previous load--63.5gr R19 w/ 130 gr Berger Classic Hunter-- was only clocking in at 3125 fps, a little slow for this caliber, but like this project, I finally ran out of time so I stopped there and hunted two seasons with that load.
Here is the BDC reticle charts and corresponding drop charts. Depending on your screen res, you might/might not be able to see them, so I'll type them out too.
130 gr Berger Classic Hunter at 3125fps:
So my last hash mark was at 670 yards
Energy at 600 yards was 1342 ft/lbs
140 Berger Classic Hunter at 3127fps
So my last hash mark is at 697 yards, a gain of 27 yards
Energy at 600 yards is 1582 ft/lbs, a gain of 240 or 18%
140 Berger Classic Hunter at 3357fps
So my last hash mark is at 766 yards! A gain of 106 yards
Energy at 600 yards is 1878 ft/lbs, a gain of 536, or 40%!
I'm no guru, but those are some good numbers to me, and completely worth the effort.
The unknowns are that the LRBC doesn't list my Razor 2-10x40 LH so I'm using a Viper 3-9x40. But I've substituted other scopes in the LRBC in my other projects as some of those scopes weren't listed either and it made no difference. My only guess why is that Vortex BDC subtensions are the same in all their scopes?
Also, I haven't verified these numbers at the range, so they could change. And as Pathfinder pointed out, I'm working with a small sample size for groups, so accuracy might end up below what I'd accept (1" at 100)