Quote:
Originally Posted by Desert Mariner
You'll note that the 5.56 weapon's E-factors come out lower than those listed in TM-1-1. I don't know if this is an error in the 4E figures or if I just haven't found the right cartridge to bump up V0.
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Try using Federal American Eagle .223 55 grain and 62 grain.
55 grain: BC .269
62 grain: BC .307