While that is a very good primer on rifle caliber terminal ballistics, it does not address the 77gr TMK.
Again- for what? Maintaining stability for hitting a target? Reliable expansion/fragmentation threshold? Wound channels in big game?
Not trying to be flippant, genuinely not sure what you are looking for.
In any case, the 77gr TMK-
Is generally stable through transonic when fired from suitable twist rates. Consistent and wide upset should be expected to +-/ 1,900fps impact velocity. Minimum (read minimal) upset down to 1,600’ish FPS.
Wound channels in big game (deer and bigger) are... extreme to around 2,300fps impact. From 2,200 or so down to approx 2,000fps impact wounds will be similar to conventional bullet from 270/30-06/etc class rounds. Below 2,000fps wounds will be similar to solid copper monolithic bullets such as Barnes TSX.
In laymen’s terms, from 20-24” barreled 223’s with MV’s of 2750+ FPS, the 77gr TMK is an emphatic killer inside of 300 or so yards. Most would consider it too much on even big deer. From 300+/- yards to 450 yards or so, it is a solid performer terminally generally giving exits on normal sized deer, and is 50/50 on being caught under the skin on the offside on big deer or major bones being hit. Past 450 to around 550-600 yards, it will kill, but effects on animals is similar to a good broadhead, I.E.- 10-20 seconds before succumbing.