As we have gone over and over - M855 fragments over the 2500 and preferably 2700fps threshold.
I did a nice chart with the MV's
Secondly just submit M855 for C77 - it was something I did for work.
C77 has a MV of 3150fps out of the C7A1, and it drop below 2700 fps around 130m, and
2500fps @ 185m.
From the 14.5" C8 it has a MV of 2925 fps, dropping below 25 00fps @ 130m and
2700fps @ 60m.
With the 16" it drops below 2700fps @ 90m and 2500fps @ 160m
*This data was assembled off an Oehler Chronograph for MV's and G1 drag co-eff w/
.304BC for the C77rd using the MCTRAJ4 program.
SO 20" 130-185M
16" 90-160m
14.5 60-130m
(ISH) are the frag thresholds.
edit cause its not worth my time...