08-15-2012, 01:03 AM
michaelmew Wrote:Closest I have found is .243 bc & ~3100 fps for M193 and .304 bc & ~900 fps for M855
Can anyone help nail down exact numbers? 16" bbl, G1 model.
-mm
MM:
You are close enough for any practical value.
I would suggest that if you intend on shooting it past about 300 yards that you actually shoot it and not trust a read out from any ballistics program. Normally I would say 500 yards but 855 and 193 can do strange things past 300. You will also find that the velocity can differ rather dramatically from what DoD has posted so it is also a good idea to chronograph it by lot.
LR1955