Optimized Caliber

[stanc]

You can make an AR10 as light as a SCAR-17 by simply using a pencil barrel and lighter COTS components.

Yes, but that would not be representative of the weight when configured for military use.

For instance, the SR25 EMC weighs 8.3 lbs.

If someone showed up to the competition with a DMR system that was adaptable to both 5.56 and Grendel, and they demonstrated what a Grendel could do versus a 7.62 NATO carbine at distance, that could be an eye-opener, especially when considering soldier's load and the ability to sustain the fight longer than 7.62 NATO, with less recoil, and better terminal ballistics.

If I were selling it, I would say,

"...I think we're really at a stage where we can seriously meet some of these constant weight-reduction requirements for the dismounted soldier, by displacing belt-fed 7.62 GPMG's, and DMR's, with a more capable cartidge, in a lighter system. Watch what it does across the target array on this range...."

I wholeheartedly agree the concept needs to be demonstrated.

The question is, which approach would give best overall results?

a. Your's - 5.56 NATO for carbine, 6.5 Super G for LMG, DMR.

b. John's - 6.5 Grendel for carbine, LMG, DMR.

c. Tony's - 6.35/6.5/6.8 GPC for rifle, GPMG, DMR.