How could or should the 6.5 mm Grendel be improved?

[woohoo]

A 6.5x45 Grendel is only 2mm short of the 6.5x47 Lapua. The 6.5x47 Lapua is pretty well established, and I'm not sure what the advantage of a 6.5x45 Grendel would be. I don't think it would fit into a AR15 sized magazine well as the bullet would have to be seated so far into the case that the case mouth would be over running the ogive. If you went to a Ar10 size rifle receiver, you might as well just go with the 6.5x47, or the 260 Remington...unless someone came up with a mid sized receiver that was between the AR15 and the AR10. If you could do that, and have the system with a "big bolt" concept, you would really be onto something.

We've been shooting the 6.5BRX in a AR15 since late 09. It is low capacity (10) using 15 round 6.8 mags but works fine for target and hunting. The 6.5x45 is something we are working on, it will have the same case capacity as the 6.5BRX. You are correct the 6.5x45(based on a Carcano) would be no advantage at all to civilian users. It would not work in a AR15 action or mag. The other mid sized thing was done back in late 09.

Add lower recoil than a 308 but better exterior ballistics to what Stan said.