I got to try out the 77TMK opening morning up here in the northeast. 181lb dressed 4pt whitetail.
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Howa mini action 16”
Hinged bottom metal (6+1 capacity)
77TMK MV @ 2680fps
80yd impact velocity est @ ~2440
Broadside impact in shoulder just behind the scapula and joint. The deer walked 20yds and expired in less than 30seconds. No bloodtrail from the entrance wound, a few specs of blood from caughing. Bloodtrailing would have been difficult as pointed out by others.
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Through entrance side rib bone
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Cause severe pulmonary hemmorraging and severed the aortic arc. Bullet traveled ~16” and stopped in the offside hide with a smaller (1.5”) exit out of the thoracic cavity.
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The performed as other here have suggested. Three fragments including the jacket base, petal, and core were recovered separated but resting together. 42.5 grains (55% weight retention) and maximum diameter of the jacket was 0.675”, the lead base expanded to .440”.
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I was very pleased with the terminal performance. I was able to clearly see my impact through the scope and stay on the deer. I had the opportunity to pic my shot through trees and brush which is not very common up her in the “big woods”. We often have to take moving or running quick shots when tracking deer in the snow. I personally believe this combo is up to the task because I can get back on target much faster for follow up shots and the TMK performed as well if not better than other 30cals in similar scenarios I have had.
Finally caught up on this monster thread, every post from start to now. Damned if this bullet isn't a cool little thing. I quoted Matt because I'm appreciative of the close-ups of the cleaned bullet fragments. Those are gnarly and given the speeds they're moving through the animal at, it makes the larger wound tracts make a lot more sense. Good stretch from the temp cavity, tissue torn by those big jagged pieces and prevented from returning. I had it in my head that a lot more of the bullet was fragmented and a lot of the previous bullet remnant pictures weren't clear on how big or how much of the bullet remained.
So it looks like the gameplan for me has definitively changed. I've got a pretty good scope on the way, already have a base for it, have one and a half AR's (soon two) to slap it on, and see who shoots these fancy 77grainers better and that'll be papa's first hunting rifle. At that point I'll be confident that the hardware is fine and it's just the software that'll need learning.
Thank folks, this topic has been a trip but an educational one for sure.