Looks like Hornady is releasing this next year, I'm curious how the case dimensions will be different than the 220 Russian grandparent cartridge. 1:7 twist specified, I'm guessing the Russian was usually in something slower? I wonder how this one will fare long term as a commercial cartridge.

Their 6 arc has a bigger following than I suspected. Most don’t know anything about the Russian unless they have been around the ppc’s. I guess the fact they fit in an AR15 versus the Gaymoor, that require the AR10 platform, helps the popularity more than I thought it would.

I’ll be interested in the numbers with the 80’s versus the Gaymoor. I don’t think it has a big enough boiler room to interest me.

Think the Arc will fit the AR better especially with longer 75 to 80gr bullets. The 224 Grendel and other names is pretty popular which is just the Grendel necked down that also does quite well with some of the heavy bullets.

220 Russian has a lot more body taper than the ARC or Grendel and I believe less case volume because of that. The 22 ARC will be between the 22 ppc and 224 Grendel in case capacity.

22 PPC, 22 arc, 224 Grendel and 6.5 Grendel can all trace back to the 220 Russian case. ARC cases are basically the Grendel with the case body shortened a few thousands of an inch to better use longer bullets.

I see this as the 22 Grendel with Saami approval, just like I see the 6 Grendel as 6 ARC. Many times I thought about converting our 6.5G to 22G, but bought a 223 instead. Now I'm thinking about 22ARC but would likely go 223AI instead. I don't think the 224 Valkyrie was as popular as hoped, I have doubts about this one too. Has anyone compared 224V to 22ARC ballistics yet, or 223/223AI?

Yes sir! The 224 Valkyrie turned out to be a hot rodded 5.56. Its claim to fame was the ability to shoot 80gr and over bullets with great accuracy and high speed.... in an AR. No doubt there are exceptions but mostly it was just over-stated marketing claims with a lot of pressure problems. The 22 ARC has, IMO, to be profoundly better than the best 5.56 to be worth the trouble. I hope they have managed it but the proof is only found in the pudding.

If one of those hit the $20-23 a box mark it would be good

I just bought Three box's of 22 ARC Ammunition with the 75 grain ELD-M bullets. It was closer to $33 a box with Tax. Brother in-law your numbers of $20-$23 do look a lot better.
I did the math, and loaded ammunition to get brass to load is not that bad a way to go at this time. When Hornady gets Brass out it will be high. Add Bullets, Powder, and expensive Primers to the cost of new Hornady Brass, and we are not that far off of loaded ammunition cost. I am not expecting Starline Brass will be on the shelf before Spring.

I have the first 22 ARC AR15 that I know of up and running. I rebuilt my 204 Ruger AR15 into a 22 ARC.
Rock River Matched Upper & Lower
Saturn 20" Rifle Gas Barrel with 5/8-24 Muzzle Thread, complete with Matched Bolt.
Jewel Trigger
Geissele Automatics MK IV x 13.5 M-Loc Handguard
Seekins Adjustable Gas Fixture
MagPul MOE Fixed Stock and Pistol Grip
Leupold MK AR 30mm Cantilever Base
SWFA 20X Super Sniper Scope
Badger Harris Bipod Conversion to Picatinny Rail. NOTE: The forward three inches of the Geissele MK IV x 13.5 Handguard is a Picatinny Rail. The 13.5 Inch Handguard is a little short to start with, going just to the front of the Gas Fixture.

I was hoping to chronograph Factory Loads today, but the weather is not all that special. Heavy overcast, low 30's and left over snow from last night.
The factory load data is figured using a 24" barrel. So the 20" barrel should be around 100 fps slower than the listed velocity.

Bob R

I’ll just stick with 223 Wylde if I want to shoot a .224 bullet in an AR.

Arc and the grendal are both based off 220 Russian or the 6ppc slight variation on some case dimensions depending on the chamber reamer seleced.. I would be willing to bet you can unilaterally use any of those so called calibers in any chamber for the 22 arc, 22 grenadl, 22ppc, even the 6 mm variety..

Marketing at its finest, totally different stuff, stick a faster twist barrel on a 22 ppc and call it a 22 arc! Pure genius!

TAB, you're 100% right. 22 Grendel, in a few variations has been around for years. Same with 6 Grendel. Hornady just marketed, via saami, to average joe. 22 & 6 PPC are even older.

What does the 22 ARC do that the 224 Valkrie doesn't do? Serious question. I don't know what the "true" velocities are for the 22 ARC are. I'm running a 55 grain Lehigh Controlled Chaos at 33547 fps (bolt gun) and a 75 grain ELD-M 2943 fps (22" AR-15).

Man that 33,547 has got to be some kinda record have never really heard of much over about 4,500…

Jk lol couldn’t resist

24" 1:8
Bolt action
.223 Ackley Improved
80 gr ELD-M 3200 fps MV

Some of the most fun you can have with your clothes on!

I've got experience with many 7mm-08 A.I. and only one .223 A.I.

All shot superb while fire forming brass. It's just slower out of the gate than it will be after they are formed.

But, they've got to be formed. I've only fire formed, never hydro formed.

The Valkrie and the Arc are coming already in their "almost" formed geometry.

Sorry! It should read 3347 fps!!