16'' 223 ai

I have a 16" .223 with a 1:9 twist barrel. I have am shooting 73 ELD-M at 2,900 FPS with IMR 8208 XBR. I have a friend shooting 80 ELD's out of an 18" 1:8 twist .223 using the same powder and getting right around 2,800 FPS. These are both straight .223's.

I have a .223 AI build coming in to the FFL on Tuesday from Patriot Valley Arms with a 20 inch barrel. I plan to work up a load for the 80 ELD-M with IMR 8208 XBR. I am hoping to get in the 3,000 FPS ball park with that barrel.

I think you should reasonably be able to get 2,850 FPS out a 16 inch .223 AI with the 75's or 80's.

Im having a 223ai with 16" barrel built by TS Customs.It also seem to me that it would be a great truck rifle.Try to go 7 or 8 twist on the barrel so there will be no problems with the heavy slugs.223ai has become my favorite caliber.

I get 2975fps from a 22" 223AI with 80gr Amax and 24.9gr XBR...I'd think a 16" version should get 2800+.

I've been thinking of a 16" bolt gun in 223 / 5.56 / 223ai also for another reason. I live in the Socialist Republic of New York. When I retire from law enforcement, technically I have to get rid of my AR. I thought about building a short barrel, magazine fed, bolt gun with maybe 1-8X24 scope or red dot, to sort of fill that space the AR would have filled. I have been looking at the Ruger Scout Rifle in 223 / 5.56. Something handy. Or I might build something. I do like the heavier 70gr to 80gr bullets.

Polizei45 said:

I've been thinking of a 16" bolt gun in 223 / 5.56 / 223ai also for another reason. I live in the Socialist Republic of New York. When I retire from law enforcement, technically I have to get rid of my AR. I thought about building a short barrel, magazine fed, bolt gun with maybe 1-8X24 scope or red dot, to sort of fill that space the AR would have filled. I have been looking at the Ruger Scout Rifle in 223 / 5.56. Something handy. Or I might build something. I do like the heavier 70gr to 80gr bullets.

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Or, you could move out of NY, keep your AR, and enjoy retirement in a more freedom loving state?

Yes moving to a more freedom state is a option. With 95% of my close family living here and my real boss in life (granddaughter) living here that might not happen soon. That's why I wanted to build a tactile bolt action, short barrel rifle.

Bumping to see if anyone has velocity updates on a 16" or 18" ackley shooting 75s.

2850 out of a 16" with an ultra 7 would be amazing.

Bumping!!!, am planning on building a 16” 223 ai, wondering what kind of accuracy/ speeds I’d be getting out of 55g pills.

2950fps with 80gr eld with 8208 from a 22" it's conservative and good on brass life.

HEnryG said:

Bumping!!!, am planning on building a 16” 223 ai, wondering what kind of accuracy/ speeds I’d be getting out of 55g pills.

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Just an update, am getting
1/4” groups at 100yds
3450 fps with 50g vmax
Out of a 16” pipe