6mm arc

Benhonda · Jan 22, 2025

Looking at building a high precision 6mm arc. What barrel would you recommend?

Old Man with Gun · Jan 22, 2025

What platform?
What is your budget?
What are your MOA expectations?

No reason to over spend if you are just looking for a one MOA AR-15.

Redlion · Jan 22, 2025

I would also recommend that you search this forum on this topic, as there are certainly a few recent threads on this very topic.

Devildog · Jan 22, 2025

Just in case you missed the following https://www.snipershide.com/shooting/threads/new-6mm-advanced-rifle-cartridge.6992101/
I’m interested in converting an existing rifle to 6 arc. Lots of good info out there. I just don’t have enough experience to offer you anything. Good luck!

Dogtown · Jan 22, 2025

Just understand that 16-20" is plenty for this little cartridge. I made the mistake of initially going 26" because why not? Well, because the velocities weren't much of an improvement over 20" in the end.

OREGUN · Jan 22, 2025

Bartlein, 24”. Next question.

redbullitt · Jan 23, 2025

I'd probably go 18 or 20 on the length tops unless REALLY craving a few fps and dont feel like getting a bigger rifle out.

Benhonda · Jan 23, 2025

I was looking at a proof 20in with a JP bolt since they are headspaced together.

Redlion · Jan 23, 2025

Benhonda said:
I was looking at a proof 20in with a JP bolt since they are headspaced together.

That should be a good combo.

DesertDasher · Jan 23, 2025

Bartlein, if you can wait for it. I had a Noveske 14.5" that didn't group well. I currently have 18" and 20" Proofs that shoot 1/2" five-round groups at 100 yards, but their barrel extensions were undersized and had to be bedded into the upper receiver.

DeathBeforeDismount · Jan 23, 2025

Looking for a 20" too. JP wants $1000 for a barrel which is criminal. Cradock is sold out and Noveske with a bolt is like $636 but hearing not so great things. Might have to just settle with a proof.

DesertDasher · Jan 23, 2025

DeathBeforeDismount said:
Looking for a 20" too. JP wants $1000 for a barrel which is criminal. Cradock is sold out and Noveske with a bolt is like $636 but hearing not so great things. Might have to just settle with a proof.

Agreed! I don't know how JP justifies doubling the price of their 223 barrel for the 6 ARC. Seeing how well their 223 barrels shoot, I'd love to grab a 6 ARC from them.

Dino11 · Jan 23, 2025

Odin Works, they have very good barrels. Mine is sub MOA.

https://www.odinworks.com/6mm-ARC-21-XL-Rifle-Barrel-p/b-6mm-21-arc-2r-tg.htm

https://www.odinworks.com/6mm-ARC-21-XL-Rifle-Barrel-p/b-6mm-21-arc-2r-tg-blk.htm

https://www.odinworks.com/product-p/b-6mm-21-arc-2r-tg-bcg.htm

Their barrels are made from McGowan barrel/blanks.

https://www.primaryarms.com/odin-wo...-rifle-gas-system-875-turnable-gas-block-21in

https://www.primaryarms.com/ar-15/barrels/caliber/6mm-ARC

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6mm arc

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