Latest . . .

20.2gr of H110
110gr Barnes TAC-TX
#400 CCI SRP
2.240 C.O.A.L.

The Barns data said this should run 2415FPS out of a 16" barrel. The problem - in my view - is that their recommended C.O.A.L. was 2.250 . . . or just exactly enough to touch front and rear of my USGI magazines. They would fit, but there was absolutely zero "wiggle room". SO . . . . I shortened them .010, dropped off .3 of powder and started working back up from there.

Where I ended is above. Chronograph said:

2450
2442
2460

I can live with that. For now . . .