Stoner Weapon System replacement?

[kato13]

Personally I go with 6.8mm for rifles and 10mm for pistols as I figure the Morrow logistical system will pretty much start from scratch.

This will make for less of an impact on a society if a teams cache is discovered, by someone with less than pure motives. Anyone who who comes across such ammo would have a much harder time finding weapons to use them when compared to 5.56, 7.62 and 9mm.

Yes they could be re-manufactured, but that would take resources that I would hope would be limited to a settlement and not to marauders.