Barnes R&D told me 2200 for caliber and half which isn’t much at all, ironically they said 1800 on LRX but the standard is 1.1x expansion which is unacceptable. I think it’s the same velocity threshold they just moved the goal post. 1.5x .224 is basically a .308 FMJ.
First experience with 77 TMK on game. Very close impact, roughly 2725 impact. Top of the back about an inch to the right of the spine into fourth rib. Good size impact. Immediate lights out, didn’t even kick. Vitals were shredded. Entire front of the body cavity and Backstraps very bloodshot...