AR10 6.5 Creedmoor build, need some help

My most recent AR-10 is a 6 creed, Proof Research steel barrel. 24” with their +2 gas system. I wouldn’t have cared about the +2, as I’d use an AGB no matter what. Mine’s getting an SLR handguard, but I really wish it were an LFAR sized Geissele Mk18 with integral ARCA rail.

Shilen, Proof, Krieger. Bartlein if you have a smith who will do the barrel work (Compass Lake doesn’t seem to do 6 creed Bartleins, yet).

McGowen has some pretty decent pricing on custom AR10 barrels.

It’s not a direct substitute, but you can throttle pressure and flow with a gas block. Don’t obsess over +2. Get it if they offer it, but don’t select your barrel only based on that.

In general, I say it like this: an AGB can make short gas systems act long, but you can never make Long gas systems act short.

So Op are you doing the 6.5 Creedmoor?

I don't know if if AR's step out yet in 6.5 PRC. It is like the Creedmoor but can shoot heavier bullets faster. Hornady has factory ammo for it.It is designed for long range competition.

d2wing said:

I don't know if if AR's step out yet in 6.5 PRC. It is like the Creedmoor but can shoot heavier bullets faster. Hornady has factory ammo for it.It is designed for long range competition.

Click to expand...

The 6.5 PRC uses a WSM size magnum bolt face. I know KAK and SSK make AR10's to chamber the WSM cartridges so it is possible, but I don't believe it is a build it yourself proposition yet.

I would think you just need a magnum bolt and a barrel chambered for the new cartridge. Or recut the chamber for a 6.5 Creedmoor. Hornaday makes both of them.

As mentioned, the +1-2 barrels aren't really needed, IMHO.

A quality Adj. GB is a very wise addition. I also recommend a heavier buffer weight and recoil spring.

I also recommend lapping the upper receiver face flat... well worth the cost of the $30 tool.

Mine are so soft shooting, it surprises everyone.

What barrel length are you looking for ?

I have great barrels from Criterion. My 22" 6.5CM is well above what I expected from a $325 barrel... even with moderately priced ammo.

Good enough that I now own 3 more of them... all of them are shooters.

The 22" Criterion with Hornady AG 140gr, 10rds, 100yds, benched, scoped, rapidish fire.. etc..

bfoosh006 said:

As mentioned, the +1-2 barrels aren't really needed, IMHO.

A quality Adj. GB is a very wise addition. I also recommend a heavier buffer weight and recoil spring.

I also recommend lapping the upper receiver face flat... well worth the cost of the $30 tool.

Mine are so soft shooting, it surprises everyone.

What barrel length are you looking for ?

I have great barrels from Criterion. My 22" 6.5CM is well above what I expected from a $325 barrel... even with moderately priced ammo.

Good enough that I now own 3 more of them... all of them are shooters.

The 22" Criterion with Hornady AG 140gr, 10rds, 100yds, benched, scoped, rapidish fire.. etc..

Click to expand...

Exactly what I did for my 6.5 CM build- the 22" Criterion barrel, lapped the receiver face, used all AERO parts except trigger and the adj gas block and it's mated to the Aero M5e receiver that I built in .308. I used the AERO .308 carbine buffer and spring, works ok the gas block is the needed part and once you get it set ends all the problems . All though I paid less than $300 + shipping here is the barrel I used
https://www.creedmoorsports.com/product/1859/shop-by-department

Handle an AR a bit and work through manipulations, you’ll get a feel for what you want and need from it in terms of controls.

I personally am a huge fan of ambidexterity, as I shoot left handed about 20% of the time, but some off side controls are nice even shooting right handed. I can’t recall the last time I pushed a standard mag release at the bench or when shooting prone - I run Troy ambi mag releases, and almost always drop the mag with my left hand bench or prone. I run bolt guns most of the time, so it’s more natural for me to yank an ambi charger right handed than standard. I really like the PDQ bolt catch, even if it does mean milling the receiver, don’t really care for in-trigger-guard extensions like the BAD lever, but they do work. I have big hands, but shorter fingers, so an extended mag release is nice, but not a necessity. I do mostly use Bushmaster extended, teardrop forward assists - I hate banging into a skinny standard knob. You really can’t convince me to buy an oversized bolt catch paddle, I usually slap my rifle to close with my palm, if I’d miss the standard ping pong paddle, I’d miss the larger paddles too, but I’ve never really found an instance where I could miss. Maybe some guys follow Clint Smith’s doctrine more closely and press the release with their thumb, but even in manipulating in that way, it’s never been a challenge to hit the standard paddle. So I don’t buy any “tacticool” release, except the ambi pdq.

As much as I enjoy AR’s, when you compare precision potential, they don’t keep up with bolt action rifles. Sure, an $800-1000 AR might shoot as small as a $800-1,000 bolt gun, but a $300 bolt gun should shoot that well also, but a $300 AR won’t.

I have a handful of precision AR’s, 10’s and 15’s alike, but none really compare to a similarly priced bolt gun for precision. My latest precision AR-15 totaled just over $2,000 before optics, even including fairly substantial sales and discounts. My hunting and Service Rifle AR-15 ran just under $1700, with sales and discounts. My new 6 creed LFAR totaled about $2500 before optics, again, with discounts and sales. The 6.5 Grendel AR I have often pictured here was $1900 before accessories, optics, and cerakote. Even a $350-400 Rem ADL, Savage 12FV, or Ruger American will shoot as small as any of these with under $250 worth of parts and smithing to bed the action and rework/replace the trigger. Getting a 3/4” AR built isn’t so difficult. Getting a 1/4-1/2” AR built is a different story. No matter how much I wish it weren’t the case.

Can't lose with JP stuff a d especially with AR 10 . Hope you got their Adj gas block, the 10 series seem to need it more