6mm ARC who has one and who wants one?

Don’t plan on one, but I’ve had a 6mm Turbo 40 Improved, which is similar and has been around for years. That said, I use my Grendel many times more than it’s 6mm offspring. If I shot competition, my Turbo would certainly see more action.

I want one, but I want it on a mini-bolt, and I'm broke, so I'll be waiting for a bit I'm sure.

I as well would like a mini bolt in the 6ARC. I think it's a very good match for case capacity to bullet size. I think it'd be great on a 20" medium heavy mini action. Mostly for range practice, but not too heavy for small/ medium game hunting. Not a barrel burner either. Nice low recoil, longer range combo.

I don't think it'd be a great hunting round. It'd be a little better than .223 for medium game for sure but not the hottest new elk cartridge.

Hornady list a few loads at 2900fps with 100gr bullets, which is actually a little faster than the cheap Winchester (and the handloads I ran which duplicated it) 100gr .243 load did out of my Savage .243

I had plans for a 6arc ar barrel but just didn't work out. The guys from sixfivegrendel forums were supposed to have barrels yesterday but have not seen anything yet. Have to wait anyway since I'm broke again.

I really want a cz in the arc, would not mind the howa I just don't like the plastic bottom.

Absolutely love the 6 ARC. I loved the idea enough to spend money and effort running a Wildcat version for 3 years now, and will convert that rifle to the factory offered 6 ARC when it burns out, and bought a 6 ARC barrel for my son’s AR.

This combination has become my favorite for deer, hogs, and coyotes, as well as long range plinking. I really love the idea of a 20” carbon fiber barrel bolt gun in 6 ARC - especially using a new 400modbb liner from Bartlein for increased barrel life!

Pictured here beside 6 Creed.

It's on the short list for consideration.

Sorry, not enough powder column for me. And you have to understand the concept of "to each their own" applies here. I think the 5.45X39 is about ideal in this class. The same concept as these newer rounds and the Soviets figured it out in 1972

LoonWulf said:

Hornady list a few loads at 2900fps with 100gr bullets, which is actually a little faster than the cheap Winchester (and the handloads I ran which duplicated it) 100gr .243 load did out of my Savage .243

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Out of curiosity I went and looked at Hornady's data. I wanted to see what loads were hitting 2900fps and I wanted to see what barrel length they used, as in theory the cartridge should do well in shorter barrels...

I'm impressed that they got 2850 with 105/108 class bullets, even with a 24" tube.

What I was most excited about was they listed a CZ527 as the test firearm. I'm getting all hot and bothered over here now.

There are two pressure standards for reloading data for the 6 ARC. Factory ammo will be loaded to the 52kpsi SAAMI standard. This won’t get the 108/110 class bullets to 2900, only 2700.

But the bolt gun data from Hornady reflects a 62kpsi standard, with 108/110’s topping 2850fps over Leverevolution powder - which can demonstrably exceed 2900fps in a barrel over 24”.

gotboostvr said:

What I was most excited about was they listed a CZ527 as the test firearm.

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Yeah, me too! I like my 527 in 6.5 Grendel. Tho im thinking of trying the Howa in 6Arc, or maybe the Ruger American if I can get away with not using AR mags.

Varminterror said:

There are two pressure standards for reloading data for the 6 ARC. Factory ammo will be loaded to the 52kpsi SAAMI standard. This won’t get the 108/110 class bullets to 2900, only 2700.

But the bolt gun data from Hornady reflects a 62kpsi standard, with 108/110’s topping 2850fps over Leverevolution powder - which can demonstrably exceed 2900fps in a barrel over 24”.

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Wish they would do that for the Grendel.

LoonWulf said:

Wish they would do that for the Grendel.

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Well... a guy CAAAAANNNN... they just don’t have the backing of Hornady’s pressure data.

Honestly, that’s part of why I like 8208 so much in the Grendel and it’s progeny. I’m fairly certain I can’t put enough 8208 in the case to hit anything above max pressure.

Varminterror said:

8208 so much in the Grendel and it’s progeny. I’m fairly certain I can’t put enough 8208 in the case to hit anything above max pressure

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Ya can't.......


Least not in my 527 with 123s........



I'd mostly just like to have a reference for what I'm already doing. I need to get a new copy of quickloads, which will help.

Varminterror said:

Well... a guy CAAAAANNNN... they just don’t have the backing of Hornady’s pressure data.

Honestly, that’s part of why I like 8208 so much in the Grendel and it’s progeny. I’m fairly certain I can’t put enough 8208 in the case to hit anything above max pressure.

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That's one of the reasons I like IMR4227 for magnum handgun cartridges. The closer to full up, the better the accuracy usually.

LoonWulf said:

Ya can't.......


Least not in my 527 with 123s........



I'd mostly just like to have a reference for what I'm already doing. I need to get a new copy of quickloads, which will help.

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Same experience here. I’ve put enough 8208 in a case that my powder pushes the bullet back out after seating! So barring THAT, when it comes to 8208 and the Grendel cases, if it fits, it ships!

mshootnit said:

Sorry, not enough powder column for me. And you have to understand the concept of "to each their own" applies here. I think the 5.45X39 is about ideal in this class. The same concept as these newer rounds and the Soviets figured it out in 1972

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They modernized their combat rifle up to 5.56 mm level, with better wound ballistics. Many 6 mm cartridges have been developed since 1974 with better external ballistics. All have better hit probability at long range. My buddy has one and can repeatedly hit a 18 inch plate at 800 yards. Not saying that you can't do that with a 5.45x39 except it is not supported with match grade barrels, projectiles, or ammunition, at least not in the USA.

Good Luck

Jerry

Jerry M said:

They modernized their combat rifle up to 5.56 mm level, with better wound ballistics. Many 6 mm cartridges have been developed since 1974 with better external ballistics. All have better hit probability at long range. My buddy has one and can repeatedly hit a 18 inch plate at 800 yards. Not saying that you can't do that with a 5.45x39 except it is not supported with match grade barrels, projectiles, or ammunition, at least not in the USA.

Good Luck

Jerry

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A 6mm 108gr. ELD-X launched at 2800 fps muzzle has about 615 lb ft. energy at 800 yds. That is roughly the same as a 22 Hornet at 80 yds.

Walkalong said:

I think Hornady was smart to keep velocity at 2700/2750ish and pressures to 52K for its intended purpose of fitting in a standard AR, thus keeping wear on bolt lugs down. A bolt gun can obviously get more without issues.

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I certainly don't disagree. Just extra happy the also added the 62k data for those of us wanting to run bolties.

mshootnit said:

A 6mm 108gr. ELD-X launched at 2800 fps muzzle has about 615 lb ft. energy at 800 yds. That is roughly the same as a 22 Hornet at 80 yds.

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I do not understand what point you were trying to convey. I was responding to mdshootnit's post on the 5.45x39.

Walkalong said:

I think Hornady was smart to keep velocity at 2700/2750ish and pressures to 52K for its intended purpose of fitting in a standard AR, thus keeping wear on bolt lugs down. A bolt gun can obviously get more without issues.

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LoonWulf said:

I certainly don't disagree. Just extra happy the also added the 62k data for those of us wanting to run bolties.

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I’m also glad to have “factory support” - especially from Hornady, because they do such a great job of it - for the two load data paradigm.

I was thinking a bit this afternoon, is the 6 ARC the first “modern” SAAMI/factory rifle cartridge which has two published pressure standards. We see multiple standards for old BP cartridges or for those made in turn of the century weaker designed firearms, 6.5x55 swede, 45-70, or 45 colt being examples. But has there been another rifle cartridge ever released with two published pressure standards available from day one?