1in8" twist for .223

[Jacks Grampa]

Will this stabilize bullets heavier than 50 grains?

 

[jelenko]

Yes. 1:8, generally, will stabilize 223 bullets up to 80 grains.

 

[miningshawn]

^^^^ agreed. Possibly the best all-around twist for 223, unless you want really light and really fast.

 

[SSL]

Will this stabilize bullets heavier than 50 grains?

Absolutely. My 1-8 .223 shoots 50 to 68-grain bullets with a great degree of accuracy. Haven't tried anything heavier just yet.

 

[karrarararararar]

As stated, 1:8 will stabilize up to 80gr bullets.

 

[SKWERLZ]

It works really well with all the 55, 69 and 77 grain bullets I shoot in them.

 

[CharlieNC]

Shoots 80.5 Berger excellently!

 

[joshb]

I shot some Sierra 77s out of my factory Tikka 8 twist the other day.

 

[AJC]

Probably the correct twist rate for any civilian ar platform. 1:7 is more for bolt actions regularly shooting 77 and heavier bullets. I wanted full bc in any 80 I wanted so I got a 1:7.

 

[RegionRat]

Here is the Berger 80.5 Fullbore bullet at 2750 and sea level with the Berger Stability Calculator, which is free online, using the 1:8 twist
https://bergerbullets.com/twist-rate-calculator/

At the bottom, it lists the Berger Bullets that are recommended for 1:8 twist to give you an idea of how they all play.
You should give that calculator a try, it is easy to run and costs nothing.
If you are not using a Berger bullet from the drop down menu, you can still research the length dimension of the ones you want to play with and plug that info in the blanks and go.

 

[JB10]

Im shooting 75gr in a 8 twist and 73gr in a 9 twiat

 

[Old Navy]

Shoots 80.5 Berger excellently!

Right on. I shot that out to 800 with great results.

 

[Fuj]

8 twist is fine. I have an RRA 16" 9 twist Delta Mid, that
groups well to 500, with IMI mod 77's. Key is the speed
the Israeli's put into their mil ammo.

 

[PopCharlie]

8 twist works great for 75 gr and 80 gr bullets. My 8 twist bolt rifle likes Berger 80.5 gr full bore bullets. Shoots .2 at 100 yards.

PopCharlie

 

[Dgd6mm]

I run 53vmax in my 1-8 twist .223, on paper will easily hold 1/2 moa to a tad bigger 5 shot to 20 shot groups at 300 yards. This is a Urbanrifleman's Wilson barrel.

 

[K22]

I have two Tikka 223 Rem with 8" twist.

The 55 Vmax and Nosler BT's shoot ok, in the 7/8" moa range. The 60 Vmax shoots in the 1/2 moa range. I haven't tried anything heavier since the 60 Vmax does exactly what I need for varmint and predator hunting.

The added benefit is that the 60 Vmax's are not terribly expensive.

 

[Laurie]

I shot some Sierra 77s out of my factory View attachment 1317996Tikka 8 twist the other day.

What sort of chamber throat length does Tikka put on these 8-twist rifles, please?

 

[joshb]

Hello Laurie! They’re happily shorter than my Remingtons.
The gun I have now is 1.939 to the lands using the Hornady tool with a Sierra 77 at the ogive.
The last one I gave to a friend was 1.938.
The one I gave my son in law was 1.947. This was an earlier T3.
Too long for magazine loading but not bad. Plenty of bullet in the neck.

 

[Rsadams]

I have heard of some 1/9 shooting 69gr match kings well and I have heard some don't like anything over 55 gr.... 1/8 in an AR is perfect in my opinion since the 90gr bullets in a 1/7 won't fit in the magazine so what good is it.... I shoot as low as 50gr in my 1/7 but have never tried anything lighter....

 

[thatguyshm]

I shoot the 75gr ELD in my Bartlein 7.75 twist, couldn't get the 80.5 to shoot as well, but didn't spend a lot of time on it as I have a large supply of the ELDs. I like the velocity gains myself over a heavier bullet. 2000pp pushes them to 2930fps with a 26" tube.