xsn10s
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This might give new life to my M4 1-9" twist. Dammit now I need another new scope lol. https://rokslide.com/forums/threads/terminal-performance-69tmk-vs-77tmk.334817/
They're back at it on RS. .223/5.56 using the 69 gr TMK on game!
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Yeah I could do that. I have both on hand.
sierracharlie338
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I'd be curious if there is any difference though I suspect there isn't but who knows!
Having cut many apart already, I only anticipate the difference being the slightly longer ogive of the 77gr and the obvious added mass.
The 77gr, as such, would offer a better balance of expansion vs penetration, particularly with larger game and higher impact velocities. In many scenarios though, you likely wouldn't see a real discernible difference.
The 77gr, as such, would offer a better balance of expansion vs penetration, particularly with larger game and higher impact velocities. In many scenarios though, you likely wouldn't see a real discernible difference.
.196 vs .219 in sectional density between the two.
Critter Picker
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I have no doubt that a perfectly placed .223 will kill a whitetail,but I would dig deeper into the gun safe. We owe it to our prey to give them a quick and painless ending.
I've seen several big whitetail dropped on the spot with the 77gr TMK. I've done it myself a time or two as well, when they first came out.
I'm confident in them working, but I do tend to prefer something a bit bigger, if only to satisfy that nagging feeling I should lol.
I actually went with a necked up 223 to 25cal in an AR for my kids to use. Still low recoil and easy to shoot, but more confidence in a wider bullet to make up for shot placement errors.
I'm confident in them working, but I do tend to prefer something a bit bigger, if only to satisfy that nagging feeling I should lol.
I actually went with a necked up 223 to 25cal in an AR for my kids to use. Still low recoil and easy to shoot, but more confidence in a wider bullet to make up for shot placement errors.
akmtnhnt
Well-Known Member
That's something that should be studied. How much does bullet diameter make up for placement errors? How much does velocity, energy?
My guess on the width part is it'll make up for the error roughly as much as the larger diameter projectile creates a larger permanent wound cavity, which is to say for the most part 1.5-3x bullet diameter, so.. an inch at most.
It'll depend on the bullet's construction and how it performs terminally as well. It's not just a matter of caliber size, impact velocity, and energy, although those things do affect the outcome as well.
I actually do study this stuff lol
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xsn10s
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Diameter plays a part. but in this case construction plays an important role. I'd say take a look at the terminal performance and compare them to larger bores with bonded or otherwise heavier construction. I'm struggling to see much difference.
Varmint Hunter
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If you launched that same 77TMK from a 22-250 or a 22 Creed; would you expect better or worse terminal performance on whitetails?
xsn10s
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Take a look at the thread. They have a cheat sheet on the first page. Here's a 22 CM using 88 ELDM, impressive terminal pics. https://rokslide.com/forums/threads/223-for-bear-deer-elk-and-moose.130488/page-264#post-3354360
Crossbow Hunter
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They make a very valid point that most people shoot lighter recoiling caliber rifles better that translates to better bullet placement. They are much quieter than a braked large caliber and are much cheaper to shoot for target practice all which leads to better accuracy and shot placement.
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