6mm Grendel Group Design Project

[BluntForceTrauma]

I consider the lack of 30 degrees to be simply hidebound, in-the-box thinking. But not the biggest deal. I strongly prefer 30, but could go either way. You gain a touch of case capacity and the supposed accuracy and throat-wear benefits, but nothing to write home about.

I could support a 6mm Valkyrie. And the 5.45x39 is a hell of a cartridge. One could do worse. . . . Both cartridges exhibit my approved "short case long bullet" principles. :p

A fully developed 6.5 Grendel (read developed and dedicated cartridges and loads) could have almost identical external ballistics and have a bit more mass for environmental barriers.