New Army "Caliber Configuration Study"

[stanc]

Enough cherry picking to "prove" a point!

That is the point I was trying to make, Joe. I wouldn't actually use the cited BC and MV of the Polish LPS round. I'd want the nominal values. In an attempt to get such data, yesterday I went to the MG&A forum and asked. One of the SME's reported LPS G7 BC as 0.208 (which translates to 0.406 G1 BC), and MV from the PKM machine gun as 840 mps (~2750 fps).

http://forums.delphiforums.com/autogun/m...msg=5922.7
http://forums.delphiforums.com/autogun/m...msg=5922.9

These numbers are in line with the mid-range LPS rounds tested by 7.62x54r.net, and seem much more reasonable to use if one wishes to have a realistic comparison.

And, while I really like Paul's 6.5 LMG concept, I just don't see how a 130gr lead-free bullet is practical. The Swedish 6.5mm AP bullet is nearly 5 calibers long, but weighs only 113gr. Make it completely lead-free, and it'd weigh less than 110gr.