New Army "Caliber Configuration Study"

[BluntForceTrauma]

Specialized loads might be irrelevant, but you're the one who brought up M2 AP.

We're discussing what bullet and ballistics the 6.5 Grendel needs to match 7.62x54R. And it's unclear to me whether we're comparing 7.62x54R lead-core, mild steel core, or AP.

All this is against the backdrop of what terminal effects the U.S. military requires. The slide show linked in another thread about the development of the British .280 was helpful because it actually listed some of the British requirements: something like penetration of steel helmet at 600m, of 1.5 inches of solid concrete at 100 yards in one shot, of 22" of loose dirt, etc.

Nothing makes sense until the military specifies its requirements, then one begins to design a bullet.

John