6.8 gurus

[sportsman]

I know there is a plethora of information on the 6.8, but I would like what info you guys/gals here have on the caliber. Im looking for info in the AR platform. I am leaning heavy towards RockRiver.. Im looking for stuff like what twist do I need? I think I read somewhere that the 1:11 was best. What length barrel. Isnt the 6.8 best suited with a barrel under 20"?

Ready set GO!!!

[cdobbka08]

I'm interested as well most of the forums I have read say you get the best performance out of the 18" as far as first hand experience can't help ya there

[Outback]

Can I slap a 6.8 upper on my AR15 lower and commence to shooting or do I need to swap out the BCG or buffer spring? Subscribed.

[wassaw]

Can I slap a 6.8 upper on my AR15 lower and commence to shooting or do I need to swap out the BCG or buffer spring? Subscribed.

Change the bolt to a 6.8 same Carrier. you can get a few rounds into 5.56 Pmags before they expand and will not fit into receiver .


OP, i built (1 so no where close to Guru) but spent hours reading. I went 16" barrel simply due to length vs benefit.
1-11 twist rate. Wilson barrel -3 reasons. they had stainless fluted in stock great price and i could get the bolt with the barrel.

[bucsfan69]

Check out Bison Armory for complete uppers.....68forums for all info you need.
IMO its the perfect round, i have 4, not one over 16" in barrel lenght.
6.8 bolt, 6.8 barrel, and 6.8 specific magazines (NOT MAGPUL THOUGH AS THEY ARE FOR THE LWRC), then u can use all standard AR-15 parts

[150class]

I went back and forth with the Ambush 6.8 and Rock River X series 6.8 and went with the ambush. Wayyyyyyy lighter, better trigger, and upgraded charging handle. Love it so far.

[hunt247]

I have one I got from PSA 18" stainless and love it

[RevMS]

Spend some time on 68forums.com ... best gun site on the web IMO.

A 16" barrel is plenty for the 6.8. I have 3, a 16, a 12.5, and a Savage Axis with a 20" ARP barrel. The 16 and 20 have taken three of my deer this year.

[lilbradford]

I am building one right now. Ar15performance is a good source for barrels and bolts. Rest of the parts I got between midway usa and palmetto.

[sportsman]

What twist are you guys running? 1:9, 1:10, 1:11?

[Mike D]

Not a guru by any means and have mixed results with my 6.8.

I have a 12.5" Noveske polygonal barrel and it performs outstanding. I've heard great things about ARP barrels and Bison barrels.

SPC II chamber is preferred and 1-11 or so twist rate is the most common. Whether it's the best is debatable.

Companies like Noveske and Black Hole Weaponry use polygonal rifling and at least Noveske uses 1-12 twist rate and they do very well.

The main different parts you will need would be a different bolt and magazines.

[RevMS]

1:11 to 1:12 is generally what is used. The 20" Savage barrels are 1:10 to stabilize 130's and 140's. Bison has a 1:7 designed primarily for subs.

Brands to look for in barrels are (and in alphabetical order ... how about that?) ARP, Bison, Black Hole, Noveske, Wilson Combat. If you want a complete rifle or built upper you're going to need to do a bit of digging (or ask the right questions) to sort through what are bad, good, better, best.

[sportsman]

1:11 to 1:12 is generally what is used. The 20" Savage barrels are 1:10 to stabilize 130's and 140's. Bison has a 1:7 designed primarily for subs.

Brands to look for in barrels are (and in alphabetical order ... how about that?) ARP, Bison, Black Hole, Noveske, Wilson Combat. If you want a complete rifle or built upper you're going to need to do a bit of digging (or ask the right questions) to sort through what are bad, good, better, best.

Anyone here want to price me a build? I want this for deer hunting, varmints and pigs. Budget of $1200ish

[altez]

I would try to get a AR15performance barrel and their super bolt. I went with a 16" barrel for portability since I stalk with mine.

68forums is a good place to get info.

[DaveC]

Anyone here want to price me a build? I want this for deer hunting, varmints and pigs.

Start here - http://www.ar15performance.com/online___store

Do a lot of clicking and reading. Tons of good info about barrel material and bullet selection and what-not.

You can buy a complete upper from PSA - when they have them in stock- for under $600.00- I'd keep an eye out there.

Aside from that you are looking at-
(rough prices going off memory of average Joe stuff- not prime rib gun parts- but should make moa and make you smile)

Stripped upper & parts kit- $75-110

http://hamlundtactical.com/catalog/index.php?main_page=product_info&cPath=92_93_191&products_id=2938

http://hamlundtactical.com/catalog/index.php?main_page=product_info&cPath=92_93_191&products_id=16592

Barrel- ARP's can be had for ~ $250

http://www.ar15performance.com/inc/sdetail/11562/14400

Handguard- UTG SLIM Pro- (the made in USA version)- $100

http://hamlundtactical.com/catalog/index.php?main_page=product_info&cPath=92_93_127&products_id=22462

Gas Block- ~$20 http://hamlundtactical.com/catalog/i...oducts_id=3078

Mid length gas tube (to match the ARP barrel) - ~$15 http://hamlundtactical.com/catalog/i...oducts_id=2925
BCG- $150

http://hamlundtactical.com/catalog/index.php?main_page=product_info&cPath=92_93_224&products_id=3098

Charging handle- from $15 on up. http://hamlundtactical.com/catalog/i...Path=92_93_105

Now you'll need a muzzle device- $60 http://www.maddogweapons.com/store/p...2C_Fluted.html
or $8 for an http://hamlundtactical.com/catalog/i...ducts_id=16840


So you are still at $500-600 for a throw together with somewhat decent parts...for a complete upper.

I've used the vendors listed above with favorable results.