How could or should the 6.5 mm Grendel be improved?

[LRRPF52]

I am reluctant to intrude in this very interesting discussion because I have no military experience and dont even have AR experience --but my 6.5 Gm with 21 in barrel easily takes the 100gn TTSX tp 0ver 2925fps, the 123 gn A Max to 2700 and the 129gn Interlock to 2550 in Lapua fireformed 7.62x39 brass. About all I would like to see with this brass is a little better neck length as when FF I get a case length of 1.5 so another .02-.03 would be good. COAL with the TTSX is 2.380, with the A Max at 2.405 and the Interlock is at 2.320 and I know Sneaky One has his AR magazines except over 2.3 so somewhere there has to be a combination of these paremeters (with adjustments of throating and COAL) that might come within the requirments you are all talking about.

Your real-world results with a Grendel chambered in a bolt gun are what I've been trying to tell some of the new members to the discussion about increasing the velocity of the Grendel. The only real thing you need to push the case to what it will handle is a stronger bolt. You could extend the COL a tiny bit, but I don't think it's necessary.

You will not get 6.5x47 Lapua performance from a shorter cartridge with a smaller diameter base, and an assault rifle or machinegun should never be run at 6.5x47 Lapua pressures in that bore diameter.

When we start talking about going back to a battle rifle-sized weapon, we have failed the soldier, the mission, and the logistics chain. You want to know what to do to improve the 6.5 Grendel?

Shoot thousands of rounds through it. Any increase in powder capacity will not be able to be exploited by well over 95% of Infantry Soldiers, and the few that can will not see a practical difference at distance anyway.