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

[Formidilosus]

Hey Form, wondering if you would still recommend this for people forced to shoot non-lead or if anything else has come to market that’s improved.

No, I wouldn’t use those unless forced. DRT Technology makes a powdered tungsten cored bullet that behaves more like a Berger. The 79gr .224 and 135gr 6.5mm seem to do well.

 

[LaHunter]

Am I seeing that some guys are shooting the black hill 556 77 gr ammo in their Tikka 223 rifles? If so, any pressure issues? Always read that was a 'no no'.

 

[Juan_ID]

Am I seeing that some guys are shooting the black hill 556 77 gr ammo in their Tikka 223 rifles? If so, any pressure issues? Always read that was a 'no no'.

correct, let’r rip. It’s been a while since I’ve gone through the thread where I last left off but I don’t recall reading about any pressure issues with the blackhills ammo in the tikka 223. I’ve shot almost a box through mine without problem

 

[Smenning]

No pressure issues in mine.

 

[Anschutz]

Am I seeing that some guys are shooting the black hill 556 77 gr ammo in their Tikka 223 rifles? If so, any pressure issues? Always read that was a 'no no'.

Tikka's rifles are proofed to the CIP (Long French acronym for Permanent International Commission for the Proof of Small Arms). The CIP max pressure for the .223 Remington is 4300 bar, while the SAAMI max pressure is 3800 bar. The NATO standard for 5.56 is 4300 bar. The U.S. military follows SAAMI pressure guidelines. That's basically a long way of saying that a Tikka .223 barrel is proofed at 5.56 NATO pressures.

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[Tahr]

Re longer Tikka magazines. These are excellent (so long as you can bring them into the US).

WR TIKKA T3 TIKKA T3x MAGAZINES 223 243 Win 6.5CM 308 Win

WATERS RIFLEMAN Precision metal magazines for the competitive, sporting and hunter shooter. Tikka T3, Tikka T3x 223 243 Win 6.5CM 243 Win 308 Win

www.watersrifleman.com

 

[robtattoo]

Re longer Tikka magazines. These are excellent (so long as you can bring them into the US).

WR TIKKA T3 TIKKA T3x MAGAZINES 223 243 Win 6.5CM 308 Win

WATERS RIFLEMAN Precision metal magazines for the competitive, sporting and hunter shooter. Tikka T3, Tikka T3x 223 243 Win 6.5CM 243 Win 308 Win

www.watersrifleman.com

I wouldn't hesitate for a second, if they did a 3 or 4 round flush fit.
I guess I could survive with a 6 though.

 

[BLJ]

Zeroed the newest RAR with some ADI 69’s today. I think it’ll be okay.

 

[huntercole]

I modified a 308 mag with jb weld to run 223 with 75 elds it looks like it should work but I’m still waiting for my rifle to get back to test it officially.


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Id like to see it too. I put some 223 in my 308 mag and it looked like the feed lips are a little further apart and were only holding the very back of the case.

 

[Hunter609]

I wouldn't hesitate for a second, if they did a 3 or 4 round flush fit.
I guess I could survive with a 6 though.

It sucks they don’t, it’s one to many rounds for hunting in Oregon.

 

[rabbithuntr]

The piece on the side is cut from a 30/06
The nose is a little higher than the factory mag but the head is right at the same height.

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[Pharmseller]

Tikka's rifles are proofed to the CIP (Long French acronym for Permanent International Commission for the Proof of Small Arms). The CIP max pressure for the .223 Remington is 4300 bar, while the SAAMI max pressure is 3800 bar. The NATO standard for 5.56 is 4300 bar. The U.S. military follows SAAMI pressure guidelines. That's basically a long way of saying that a Tikka .223 barrel is proofed at 5.56 NATO pressures.

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Too much TAC with a 75 ELDM in hot conditions will change the way you look at the world.



P

 

[Anschutz]

Too much TAC with a 75 ELDM in hot conditions will change the way you look at the world.



P

I guess it's a good thing he was asking about BH factory ammo, which is likely not near max pressure to account for changes in temperature.

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[Chris_in_Idaho]

The NATO standard for 5.56 is 4300 bar. The U.S. military follows SAAMI pressure guidelines. That's basically a long way of saying that a Tikka .223 barrel is proofed at 5.56 NATO pressures.

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Is that 4300 bar standard for 5.56 assuming the 5.56 ammo is being fired from a 5.56 chamber with the long sloppy freebore?

Firing the same 5.56 ammo in a standard 223 Remington chamber causes even higher than typical "5.56 pressure" because the bullet can no longer make the easy initial jump to hit the rifling.

This is why chambers with a gradual lead such as 223 Wylde came to be. To try to maintain some of the precision of the 223 chambering without causing the pressure spike.

In this case I have read elsewhere that a Tikka has a chamber similar to a Wylde and it can legitimately use 5.56 ammo without exceeding allowable pressure.

But in general, comparing the stated pressure of 5.56 ammo against the allowable pressure of a 223 rifle is faulty logic because "5.56 pressure" is only true from a 5.56 chamber.

Sorry, soapbox rant complete...

On that, now that Finland became a NATO member 8 months ago, do you think Tikka will begin marking their rifles with "5.56 NATO"?

 

[Anschutz]

Is that 4300 bar standard for 5.56 assuming the 5.56 ammo is being fired from a 5.56 chamber with the long sloppy freebore?

Firing the same 5.56 ammo in a standard 223 Remington chamber causes even higher than typical "5.56 pressure" because the bullet can no longer make the easy initial jump to hit the rifling.

This is why chambers with a gradual lead such as 223 Wylde came to be. To try to maintain some of the precision of the 223 chambering without causing the pressure spike.

In this case I have read elsewhere that a Tikka has a chamber similar to a Wylde and it can legitimately use 5.56 ammo without exceeding allowable pressure.

But in general, comparing the stated pressure of 5.56 ammo against the allowable pressure of a 223 rifle is faulty logic because "5.56 pressure" is only true from a 5.56 chamber.

Sorry, soapbox rant complete...

On that, now that Finland became a NATO member 8 months ago, do you think Tikka will begin marking their rifles with "5.56 NATO"?

You are correct. I did miss that throat piece. It shouldn't be a factor with factory loads because manufacturers are loading under the max, but I wouldn't take the max load some yahoo on the internet came up with on their 5.56. That'd be unsafe loading practice to begin with, though.

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[xsn10s]

Starline does make a note of the difference in pressures between their .223 rem brass and 5.56 brass. https://www.starlinebrass.com/556x45mm-brass

 

[Pharmseller]

I guess it's a good thing he was asking about BH factory ammo, which is likely not near max pressure to account for changes in temperature.

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My statement holds true regardless of the original question.








P

 

[xsn10s]

Am I seeing that some guys are shooting the black hill 556 77 gr ammo in their Tikka 223 rifles? If so, any pressure issues? Always read that was a 'no no'.

If anything happens the first thing any manufacturer is going to ask is "What ammo and do you have the case that failed.". Once that is established it's easy to say that 5.56 is not approved for .223 Remington chambers due to chamber pressure.

 

[flyinsquirel]

@Pharmseller - If you mentioned it before I missed it; but would you mind telling us how much TAC and what temps caused that? I’m currently using TAC behind a 77SMK at 2720. Haven’t seen any issues on hot days yet, but definitely not looking to find out.

 

[wirehead]

Add one to the list.

.223 62 grain federal fusion MSR

95 yards. Neck shot (not on purpose but not by accident - long story).

DRT

Just turned 10 and her first deer / first buck. Happy kido. Proud papa.