New Army "Caliber Configuration Study"

[stanc]

The other bullet pictures, including the slightly lighter AP round, all seem to be about this same length as the two you pulled up for us.

Yeah, the AP and Ball projectiles appear to be the same length, with the Tracer bullet maybe just a hair longer.

If I read the labels correctly, the whit-tipped bullet is the 7.78 gram tracer bullet. The copper-colored boattail bullet is a heavier ball round.

Correct. I've so labeled the pics in my previous post.

A pity the AP and Tracer bullets don't seem to be available in shooting quantity. They'd be interesting to load in 6.5 Grendel cases for some possibly informative testing.