6.5 x 40 New AR varient

[stanc]

[The 6.5x40] does, however, have more the look of a classic military cartridge.

Yup. Overall configuration appears better suited to military use than 6.5 Grendel. Plus, the marginally longer case makes design of a viable metallic link a little more certain.

I found it interesting that the 6.5x40 round in the photo has a cannelured FMJBT bullet. I wonder if Shoffner got Lapua to make a special batch, or if someone else machined the cannelures onto COTS 144gr projectiles.