New Cartridge Developments and Implications for Dismounted Infantry Soldiers

[stanc]

Thinking about Liberty Ammunitions T3 copper body/steel tip bullets.

First I've heard of this, John. Tried googling, but got nothing. Can you link?

I'd like to explore the concept of a 6.5mm T3 with a lighter bullet for ARs and a heavier bullet for LMGs.

While having heavy bullets in linked machine gun ammo and light bullets in stripper clips could be done in theory, the reality is it goes against long-standard practice in both US and UK armies.

Thoughts on the Knight's Armament Stoner LMG? It has constant recoil. Convert to 65G as a proof of concept?

Don't know enough about it to comment, except to say that (IMO) it ought to be as good as any 5.56 LMG for conversion to 6.5 Grendel. Got metallic links?

Still think 6mm is too similar to 5.56 to change.

You may well be right. I'm no longer so sure about it, myself.

I maintain that 6.5 very nicely splits the difference between 5.56 and 7.62 and that the extra bullet mass counts for . . . something! (Seriously, I'm thinking construction material barrier penetration.)

Yeah, bullet mass is important to defeat some materials.