Quote Originally Posted by 1168 View Post
6.5 Grendel and 6.8 SPC don’t make sense for general issue cartridges, either. They decrease mag capacity, increase weight, and decrease MPBR. Just because you or I can take advantage of the ballistic coefficient of 6.5 Grendel, doesn’t mean that the average Joe can apply his limited range estimation and holdover skills under stress.

The only thing that makes sense to me, is to continue with the cartridge that we have. The one that all of our allies use and produce.
I was assuming if we had to replace 5.56 NATO. If we wanted a cartridge to replace 5.56 NATO, a short 6 mm based round makes sense to me despite the limitations you pointed out.