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Where is 6arc going?
- Thread starter padfoot 37
- Start date
At the NRA show in Houston, I spoke with the Geissle reps and they had the 6ARC on display. They claim that they solved the mag issue a while ago and what they did is proprietary. Release of the rifle supposedly will be late July.
Talked to Brenton and their mags not dropping free is “normal” per their spec, so they say. 
If this was M4 carbine everyone would return all of the mags the next day, if they don't drop they are unusable/M4CTalked to Brenton and their mags not dropping free is “normal” per their spec, so they say.
Their mags aren’t made to the proper spec, M4C wouldn’t be wrong.
@MSTN - what gas block are you running under the G handguard? Getting ready to order same proof CF barrel and have same HG laying around. Ive had issues with some adjustable blocks making contact with G handguards. Thanks!
My 14.5 Proof CF today after 100 rounds suppressed. 103 ELDX. To make matters worse, it's running a Superlative Arms bleed off too, should be sending minimal gas back. It does function fine, but it sure does get filthy fast.
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My 14.5 Proof CF today after 100 rounds suppressed. 103 ELDX. To make matters worse, it's running a Superlative Arms bleed off too, should be sending minimal gas back. It does function fine, but it sure does get filthy fast.
View attachment 7908735
Yeah, the bleed off has block isn't doing what you think. The schmutz in your receiver is coming back down the barrel as the gun unlocks, because of the suppressor. It’s not coming from the gas tube.
What does your hand guard and barrel beyond the gasblock look like?My 14.5 Proof CF today after 100 rounds suppressed. 103 ELDX. To make matters worse, it's running a Superlative Arms bleed off too, should be sending minimal gas back. It does function fine, but it sure does get filthy fast.
View attachment 7908735
Mmmmmmmmm. I need to get a ruger ranch grendel and swap the barrel to 6arc once supplies are able to be bought.
I understand that, but it's still far less gas in the action than a standard gas block. Adjustable or not.
It's got some carbon on it but nothing crazy. It is extremely close to the end of the handguard since it's the "Intermediate" length. There isnt much handgaurd there for carbon to build up on.
It is, 17 clicks out. After 4.5 you go from restriction to bleed. There is carbon inside the handguard.
Comparing the barrel bore diameter to a gas port diameter, then accounting for the fact that the majority of the gas in the gas tube is supposed to go down the tube into the action; suggesting that the small amount of gas that is vented in bleed-off mode will substantially affect the dirtiness of the receiver is a fallacy.
Interesting find at the range. These are just a few of the many left here by the person who fired them. By any standard I use, these are extraordinarily dirty, even for a gas gun. And yes, they are 6mm ARC.
ETA: when I see cases like this, I have to wonder if: A. They are too low pressure to seal in the chamber upon firing, our B. The upper is over gassed and ejecting then too early.
ETA: when I see cases like this, I have to wonder if: A. They are too low pressure to seal in the chamber upon firing, our B. The upper is over gassed and ejecting then too early.
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They are shooting suppressed.
Interestingly enough, i recently start to do a little surface research on the round and it seems interesting. It seems like most of these longer range/ alternate rounds has its own quirks but overall are pretty efficient cartridges.
The odd ball mags, bolt face and heavy fouling sorta of give me pause. I wouldn't call any of these things show stoppers, but something to consider before jumping head first into the 6 ARC game.
The odd ball mags, bolt face and heavy fouling sorta of give me pause. I wouldn't call any of these things show stoppers, but something to consider before jumping head first into the 6 ARC game.
SLR.
It appears Geissele has for some time chamfered the corners of the gas tube channel, correcting this previous issue.
I agree. In my mind the Grendel, ARC, SPC, Valkyrie are not stand-alone rifle cartridges but performance specific adjuncts for someone with a 556NATO or 300BO AR-15 already.
Those are like gold. Cartridge is so new that new brass is very hard to find. Pick ‘em up
I did. Someday I’ll get around to tumbling them and offer them up to those that need them.
...as more ammo is making it to the shelves, along with powders I suspect the cartridge progress will increase correspondingly. Brass is still an issue, but cursory looks online show Grendel brass coming up more frequently for those that don't mind converting...
All in all, we haven't seen it come close to what it "can be" yet, but it's moving forward, not backward...
All in all, we haven't seen it come close to what it "can be" yet, but it's moving forward, not backward...
I am not shooting suppressed since my shitty state doesn't allow them. My cases look like normal AR 556 with a little carbon on the neck, but nothing on the body of the cases. I am running an adjustable gas block and the Proof has a rifle +1 gas system.
ARC is definitely a little bit sootier than 5.56, but I agree the most of the difference in how the cases and upper receiver look is from suppressed vs. unsuppressed, not cartridge.
My match 6mm ARC AR-15 that runs a Hellfire Match brake all the time and never a suppressor has 500 rounds through it and I don't know if I've ever cleaned inside the upper yet. No undue filth.
My match 6mm ARC AR-15 that runs a Hellfire Match brake all the time and never a suppressor has 500 rounds through it and I don't know if I've ever cleaned inside the upper yet. No undue filth.
I think I have ~5 rounds of 6ARC downrange without a suppressor; the cases come out nice and clean (function test). I have ~5000 downrange suppressed and the cases are dirty. They clean up and reload just fine. The upper fouls like any suppressed AR15 upper, but cleans up just as easily as any other upper. I don't tend to go more than 500-1000 rounds without cleaning (I clean after every range trip, and don't often do days with that many rounds), but I haven't had a stoppage at the range yet.
I thought 6.8 spc was as reliable as 556
I've been running the ASC steel (aluminum?) mags and Hornady Black 105 BTHP ammo in my Proof barrel. The mags work great and the Hornady ammo is okay, I just needed a bunch of something that I could harvest the brass from. Now, I'm running 105 Hybrids out of that brass and she's a good shooter. The ARC kinda got off to a bad start, it seems to me, because of COVID, but if the industry ever recovers I think it'll do well. I was going to do a 22" Krieger but it was double the cost and would've taken a year to get. I just dont care about an AR that much so I was able to find an in-stock Proof and jumped on it. Except for the length, I haven't regretted it.
243 LBC, 6mm AR, and, my favorite, the 6 Fat Rat are all precursors to the standardized 6 ARC. These cartridges deliver the most fun you can have with an AR platform.
Broke in the 6mm arc barrel from CLE cleaning every round like the instructions suggested that came with the barrel. Then shot these 3, 5round groups. Factory 105gr hornady black ammo chronod an average of 2693fps out of my 20in barrel. Sweet groups, excited to see what else it can do.
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CFE is pretty dirty and worse when suppressed. That's the case with my Grendel, haven't finished my 6 ARC yet
I have kept all my Grendel brass, had a couple people run out and start grabbing it. They weren't happy when I told them I was keeping my brass and would like it back m
I got 500 new from starline and several hundred first fired in my gun and another couple hundred range pickup.
Primers and powders gtg, now short on projectiles .
My 223 is taken a beating lol.
Primers and powders gtg, now short on projectiles .
My 223 is taken a beating lol.
I agree with most. What do you mean one piece rings are daf?
I have seen no issues with them.. only a few thousand rounds. To be honest... it seeks the mcfarland seals better and is more smooth.
Dad has a 18" +1rifle gas arc. It runs ok. With a heavy a5 buffer.. it only runs suppressed. Does not lock open unsuppressed. With a sup arms gasblock.. it seems no more dirty than a 5.56 with can on end.
Anyone saying it is more dirty must be running low mass carrier, using restriction gas control - thusly dumping back into their receiver and far too low of a reciprocating weight.
Too many grendel wildcats have been around with 6mm bullets for the last twenty years. This one is going to take off. Just like 6.5crapmore. Hornady is an expert about fluffing numbers and raping the profits out of stealing some small gunsmith's hard work.
In short - fuck hornady. This cartridge was overhyped in the claims, much like valkyrie. It is here to stay.
People need to get over this whole “stolen” garbage when it comes to people/companies paying for and going through the process of SAAMI standardization. Every modern cartridge is a derivative of an older cartridge/cartridges, including your beloved wildcats.
How, in any way, is this theft? What wildcat was this “stolen” from? Bet it has a parent cartridge it’s a slight modification of, too. Let’s see what completely unique wildcat you’re discussing that isn’t based on an existing cartridge that’s been slightly modified.
How has it hurt small gunsmiths? They can cut 6ARC chambers. If anything, they’ll cut more since more people will be interested in a cartridge they can (in theory; thanks shortages) buy ammo on the shelf for, if for some reason they’ve restricted themselves to only cutting a single chamber. If they cut others, then this point is entirely moot.
It’s also a win for consumers; most do not want to run one-off wildcats. Additionally, now you can buy factory ammunition for a really nice cartridge balance (6mm/good powder capacity) in an AR15 or other small platform rifle. Not everyone is a reloader like myself/others on this forum.
Not only that, but people act like a big company that has pressure and velocity test equipment is going to use (on faith?) the load data developed by a single guy or small company that doesn't have any test equipment beyond a chronograph.
It's not a slight on the small guys, it's just a simple fact that the efforts are going to be nearly the same whether a company like Winchester, Remington, Hornady, Federal, etc... sets up for a new cartridge regardless if the new cartridge dimensions are entirely different, or if they're partially or completely the same as an existing wildcat (which the engineers at said companies may or may not even know exists, let alone who developed them). There's testing and R&D and feedback loops of development in every aspect of tooling up to make a new cartridge and the "little guys" offer almost no help in much of it.
How many million gun owners? This entire community of fairly serious precision shooters is probably in the tens of thousands (maybe hundreds of thousands?), and it's a big drop off even yet again for how many reload, and even bigger drop-off for wildcatters.
Regardless, there's a gigantic bulk of the shooting US that wants to drive down to Scheels, buy a few boxes, and go shoot at the square range without getting anywhere near as deep into the weeds as most of us do, and that's what makes the world turn. Love it or hate it, that's reality. And that's why making things mainstream, SAAMI approved is beneficial to supply for the entirety of gun owners. It doesn't change much for the guy custom forming every piece of brass from a parent case, but it makes a world of difference to the rest of shooters.
I wish it was possible to make a cartridge fit in a small frame AR and match the performance of the 243 Win.
Just dump some pistol powder level with the case neck and tamp it down with a bullet. Might be a tad hard on brass, and the bolt, and pretty much everything, but there you go.
Plus tax and shipping? I could sell a case for that much.
I’m hoping the new Ruger small frame 308 can be an answer to this. It looks like a AR15 size with an enlarged mag well.
Sigh, something else I’ll have to build.
Just so you deplorables keep your hands off my 6.5g brass.
www.brownells.com
PRECISION HUNTER 6MM ARC RIFLE AMMO | Brownells
Tested, selected and fielded by a specialized group within the U.S. DoD for its multipurpose combat rifle program, the versatile 6mm ARC does much of what larger cartridges can and everything that smaller cartridges can’t. Designed to meet the nee...
www.brownells.com
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