.223 for bear, mountain goat, deer, elk, and moose.

Joined
Nov 12, 2022
Messages
18
I plugged in some number for 77gr TMK out of a 20" barrel and got a minimum expansion threshold at 210 yards? This seems way off as I was thinking at least 450 yards.

What's the consensus on ~1800 fps for 77gr TMK with a MV of ~2800 with a 20" barrel?
 
Joined
Feb 20, 2024
Messages
360
I plugged in some number for 77gr TMK out of a 20" barrel and got a minimum expansion threshold at 210 yards? This seems way off as I was thinking at least 450 yards.

What's the consensus on ~1800 fps for 77gr TMK with a MV of ~2800 with a 20" barrel?
Way off. Over 500 yards. I get 500 with 2710 out of a 16”
 

clperry

Lil-Rokslider
Joined
Dec 5, 2019
Messages
257
I plugged in some number for 77gr TMK out of a 20" barrel and got a minimum expansion threshold at 210 yards? This seems way off as I was thinking at least 450 yards.

What's the consensus on ~1800 fps for 77gr TMK with a MV of ~2800 with a 20" barrel?

You have an input or program error. 2800 fps gets you 500 yards at sea 600 ft above sea level.


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Joined
Dec 16, 2020
Messages
776
Location
Idaho
I plugged in some number for 77gr TMK out of a 20" barrel and got a minimum expansion threshold at 210 yards? This seems way off as I was thinking at least 450 yards.

What's the consensus on ~1800 fps for 77gr TMK with a MV of ~2800 with a 20" barrel?
With Stand1 77tmk ammo, I get 2771fps MV out of a 16 inch barrel... which at my elevation (4500) gets me to 570 yards before it drops below 1800fps.

With Black Hills 5.56 77tmk ammo, I get 2690fps MV out of the same 16 inch barrel, which gets me to 525 yards.

I would guess you should be at least 100fps more with a 20 inch barrel... I think I was around 2925fps with the stand1Armory stuff out of a factory length tikka stainless superlite (22 inches I think?)... that got me out to about 640 yards and 1800fps with the longer barrel.
 
OP
P

PNWGATOR

WKR
Shoot2HuntU
Joined
Oct 14, 2014
Messages
2,744
Location
USA
The one that pushes a 77grTMK in a .223 to 1800fps out to 675yds with an 18in Tikka.
Can’t help you with that.

I’m certain it exists, but I’m not one with that level of first hand experience.

22CM
22PRC
22UM

Above is where I’d start based on your expectations.
 

mtnwrunner

Super Moderator
Staff member
Shoot2HuntU
Joined
Oct 2, 2012
Messages
4,112
Location
Lowman, Idaho
Handloads, yes.
No offense but the person who shared this load with me made me promise not to share;
seriously.
I will say it's on the hot side.

Kinda like when someone shares their honey hole with you with the understanding that you won't share it. Man's word is his word.

Randy
 

mt terry d

WKR
Shoot2HuntU
Joined
Jul 18, 2023
Messages
737
Seriously 😂, we are all grown ups here
Ha! Yeah, right! ROFL
Kinda like when someone shares their honey hole with you with the understanding that you won't share it. Man's word is his word.

Randy
Yeah, but depending on the person it might not be a real tight bond.
;)

It's not really like it's a secret. It's been discussed on RS in other places.

Okay, back on topic kiddos

Only a short time till another massive influx of dead critters thanks to
223 & TMK

I'm getting excited!!!
 
Joined
Aug 18, 2015
Messages
1,468
Location
Harrisburg, Oregon

Don’t do this:



The only time I’ve ever exceeded book max.



P
 
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