OBT to MV Speadsheet

[alwie]

I did a bit of research and came up with a spreadsheet that will calculate optimal MV for a given Barrel Length, COAL, Bullet Len, CBTO and OBT node.  Put in the values you want for those parameters and the spreadsheet(here) will calculate your target MV.   You will have to create your own copy to modify it.

Feedback would be appreciated 

Alex