Hornady announces new 6mm AR cartridge (6mm ARC)

[Ggreen]

https://www.thefirearmblog.com/blog/2020/06/04/stt-15-6arc/

I saw this article and thought, “what Pmag is that?”

Am I crazy or don’t you have to use a 6.5 Grendel magazine?

My grendel will feed ok from a standard pmag. I've ran a few mags of steel cased wolf just to see. I don't rely on them, but in a pinch they go OK in my current upper

 

[CallSign Snafu]

In regards to this new cartridge perhaps being a grendel killer, there is already more than one firearms manufacturer getting ready to release AK's in 6.5 Grendel. Palmetto State Armory for one. Don't count out the 6.5 Grendel just yet.

 

[Ggreen]

In regards to this new cartridge perhaps being a grendel killer, there is already more than one firearms manufacturer getting ready to release AK's in 6.5 Grendel. Palmetto State Armory for one. Don't count out the 6.5 Grendel just yet.

I don't think it will kill the utility of the 6.5. Especially in ak's. It may beat it up in some precision applications ar's and short action bolt guns

 

[Areoflyer09]

I don't think it will kill the utility of the 6.5. Especially in ak's. It may beat it up in some precision applications ar's and short action bolt guns

This^

It’s a more focused round. I’m not sure it will perform as well as the 6.5G from short barrels, but it should excel in the 16” and up range.

It’s also one that I wouldn’t expect to see show up in the AK platform.

It should kill whatever interest was left in the Valkyrie though. Is the Valkyrie still a thing?

 

[markiemark]

I’m interested in the cartridge and hope it takes off. I’m thinking this may impact the 224 Valkyrie pretty hard. I put one together right after it came out and havent been a huge fan. Seems they did a better job bringing this to market with several companies already on board and the DoD involved.

 

[Ggreen]

This^

It’s a more focused round. I’m not sure it will perform as well as the 6.5G from short barrels, but it should excel in the 16” and up range.

It’s also one that I wouldn’t expect to see show up in the AK platform.

It should kill whatever interest was left in the Valkyrie though. Is the Valkyrie still a thing?

Federal will keep Valk alive, they have a metric ton of 6.8spc brass. 22nosler on the other hand

 

[masterdekoy]

Correct me if I’m wrong, but the case doesn’t look as tapered as a 6.5 Grendel, is this just a Grendel necked down? Either way I’m intrigued. Will be watching this one. Hopefully they don’t have the problems at launch the 224 had.

 

[NyleRN]

I suspect this might end up a Grendel killer. The Grendel is excellent. But for most of what you want a Grendel to do, it’s better as a 6mm.

This is what the grendel should have been to begin with

 

[Areoflyer09]

https://vimeo.com/418644813

I came across these videos from Hornady. I’ve only watched the barrel length one currently, but it sounds like (from Hornady) that it is capable of performing down to a 12” barrel. Should be interesting to watch this one develop with more options down the road.

 

[Wanderer]

Should push 108s to 2700+ in 18” gun.

Looks like the 2700+ fps MVs will mostly be coming out of longer barrels, at least with factory ammo. With 18" it looks like it'll be more in the 2600-2650 range.



Nonetheless, looks like this could be a very promising round and I'll definitely be keeping an eye on it, especially since I've been thinking of getting a Grendel rifle sometime soon. The 108gr ELD load looks like it has both a higher BC and higher velocities out of the same length barrel compared to 123gr Grendel loads. I'd assume it would have slightly less felt recoil as well on account of the smaller, lighter bullet. I think its long-term success will depend on the availability of cheap range ammo. Wolf's been selling cheap steel-cased Grendel for a while now, and since the 6mm ARC appears to have the same parent case as the Grendel (.220 Russian), I assume it wouldn't be too much trouble for the Russian factories to do the same with this new round.