Home Forums Hunting & Shooting AR and Tactical Rifles 6mm ARC what do you think ?

I heard there was something afoot up there. I’m still trying to un-explode my head over what happened here, haven’t gone out of my way to find other things to blow a gasket over.

I gotta think SCOTUS is going to clean a bunch of this up but DAMN these things move slowly.

The real bummer here is that every rural county came out STRONGLY against Measure 114…. In some cases as much as 75% against it… but the overall turnout in those counties was terrible. People just didn’t bother to vote. Voting is REALLY easy in Oregon. Where’s that head-slap emoji…..

You smoke to much dope……

I favor the 6x6.8 (6spc) over the 6 arc.
I've done both, got rid of the 6arc as the 6x6.8 just does everything better imo. Strictly a coyote, deer, goat rig
I just run a 90g bullet.
No issues running it to 800 yards.
I did up a 6arc, bolt gun for a pal, runs 105g hornadys to 1000.

I recently picked up some 6 SPC dies from CH4D ... they had them in stock. Interested in knowing why you prefer the 6 SPC to the ARC?

Is there even such a thing as 6SPC? I see you guys referring to it as that. I know that as a 6WOA, as I stated in a previous post. It is a better cartridge than the 6ARC IMHO..

6 SPC has the 23 degree shoulder of the parent case, 6 WOA is 30 degrees I believe

not to sidetrack too far

but what's the attraction to shooting 90gr 6mm bullets from 6arc or 6spc instead of 77gr tmk out of a vanilla 223?

besides "i can" which is valid... bunch of hoops to get at best marginal better ballistics and most cases worse.

same bc, same velocity, and most likely worse terminal performance.

i think the 6arc would really shine with 95gr eld-m bullets. or the 95gr tmk... and an aermat LMT enhanced style Bolt. and some lapua brass.

A lot of states, like Washingfornia where I live, prohibit 223 caliber bullets for big game.

I dig my 6mm ARCs, I have both a heavier 21" and a lightweight 18", usually stick with 100gr to 108gr, but they will sling 95gr SSTs and 85gr SGKs quite well also. The 108gr eld factory load shoots well in both of mine, haven't used that bullet on deer, but the reports are good. I think my next ARC will be a 12" SBR, although I'd like to add a Howa mini at some point too.

I wanted to run a 90g bullet at 3000 fps at a minimum in my bolt gun build and a 55g bullet at 3500fps, 22" bbl.
6arc didn't do that when I built the 6x6.8, (6spc).
Simply necking 6.8 to 6mm, like the 6.5grendel to 6mm.
My 90g load cronies at 3068 fps, 55g load at 3570.
The 6mm arcs in the ar15 frame I assembled could not meet those requirements.
Nothing wrong with the 6arc, just didn't fit my needs.

Still using IMR 8208XBR with the 90 TGK's?

Let me guess.....that load was never actually pressure tested, but you saw no pressure signs whatsoever?

Tony

P.S. I have a 6-6.8 in a bolt gun. Your pressure is WAY high my friend.

What are you getting with the 90 grain projectiles, what powder, COAL and barrel length?

Suppose I would ask what would be your intended use for the rifle? do I want to shoot factory ammo or reload. IMHO the comparisons that deserve consideration are the 223, 6mm ARC & 6.5mm Grendel. Your utility considerations & ammo expense expectations will determine the best upper for the utility considerations.

I came to the conclusion that for my utility the 6mm ARC checks more boxes, Bolt action was a cost effective step up for my use. Semiautomatic did not equate to a benefit for my criteria. So the re-barrel a CZ527 in 7.62x39 to 6mm ARC was my EZ choice & 2 years later I have no regrets.

BTW I was looking at a new upper for a RR 223 as well. The RR Varmint sits in the safe as the bolt action 6mm ARC does more for my utility considerations.
The 6mm ARC upper that I have liked the best on paper, is not commercially available to my knowledge. The Geissele 6mm ARC may come closest to a AR option that could bring me to going 6mm ARC AR. Never say never!

Wow!...I must be getting old. I'm seeing the 6mm ARC as Robert Whitley's recycled 6mm AR, or Greg Krebaum's 6mm RAT. Both were designed as Highpower Rifle Cartridges to be shot out of a standard AR magazine, and most often were shot out of a 26" barrel. Both were chasing 3000 fps with a 107 Sierra, and ended up blowing the shoulder forward to try to get there yielding the 6mm AR Turbo and the 6mm FATRAT. What made both feasible was the availability of quality 6.5 Grendel brass. Krebaum sourced dies from Hornady and so I suspect that's where Hornady got a clue to commercialize the RAT or AR as the ARC.

I have a Grendel upper and an AR upper, but I never put much time on them because I began hearing instances of cracked lugs in the AR15. I spoke to Holliger about the ARC when it first hit, and his response was tepid. He had the same concerns about exceeding the design strength of the bolt lugs because of his experiences with the 6mmAR and the RAT. John summarized his thoughts on his webpage if anyone cares to look.

I've got a bit more time on a 6mm WOA aka 6mm/6.8SPC, and it's a solid accurate cartridge, but doesn't have quite the boiler room of the .440 based cartridges. 107 class bullets also preclude magazine use. The 6mm HAGAR is a stretched out WOA with more powder capacity, but the same problem with feeding 107's through the magazine. ...but if you're looking to shoot these through a bolt gun...a WOA or a HAGAR might be your huckleberry.

The BR is also an option (I've got one). But the parts to build one were rare to begin with and have pretty much dried up...so mine is mostly a curio that I don't run hard.

I think yo're referring to the PDK (Predator Dog Killer) line of cartridges. The PDK was a SPC stretched out a bit longer, but not as long as the HAGAR. Holliger was playing with it for a while and was chambering barrels for the 6mm PDK, but my recollection was that he wasn't getting the accuracy he wanted. Maybe it was the custom brass that wasn't up to snuff.

This photo doesn't exactly fit the discussion, but Photobucket is deleting all free accounts, so I cleaned out my bucket and this is one of the relics I had in there;


The 240 NMC is pretty close to a 6XC, so you can see why the WOA, AR TURBO and the FAT RAT didn't get close to 3000 with the 107's.

Thanks for the update.

kwg

You CLUELESS Fhuqktards are a hoot! Hint.

The ARC has both the ass(case capacity) and modest case length,to grant opportunity to superior projectiles. Read that again. Now one more fhuqking time. Hint.

The Retardation of anything SPC,is simply fhuqking mind numbing. Bullets matter wayyyyyyy more than headstamps ladies...and now even you gals "know". Starting velocity,ain't impact velocity. Hint.

Fhuqking LAUGHING!.............

Why did his comment hurt your surgically created vagina? You retard Biden voters crack me up.

Rickety,

You've never even seen or shot a 6 ARC...you "lucky" kchunt. Hint. Congratulations?!?

They look like this. Hint.



Though "luckily",you can "afford" to steal avatars. Hint.

Fhuqking LAUGHING!..............