AR10 barrels

[B23]

Something to be aware of with using a Proof Research barrel and their +2 gas port, if you're putting this on a Seekins SP10, is with Proofs gas port being +2 further toward the muzzle, the handguard will no longer cover the gas block. Not only with 3/4 of the gas block be forward of the handguard, but the adjusting screw for the gas block is now in a real PITA location and I'm probably going to drill a small hole in the handguard so I can get a Allen wrench in there to adjust it. I already contacted Seekins and they only make one length handguard for their SP10 so a longer one isn't an option either.

 

[ntsqd]

Other than the adjusting screw issue that seems more of a cosmetics concern than a functional one?

FWIW the Superlative Arms AGB adjusting screw location will also fix the problem.

 

[Rudolph Ferdinand]

After much searching for the right gas block, I installed an ODIN WORKS gas block adjustable from the front. Much looking at videos on YouTube on installing and getting to correct AR-10 build.

 

[B23]

Seekins makes one with a cam arm they call their Select Adj gas block and had I known about this, that's more than likely the one I would have gone with instead of their low profile GB. https://www.seekinsprecision.com/product/upper-accessories/select-adjustable-gas-block-876.html

 

[jbs2014]

Something to be aware of with using a Proof Research barrel and their +2 gas port, if you're putting this on a Seekins SP10, is with Proofs gas port being +2 further toward the muzzle, the handguard will no longer cover the gas block. Not only with 3/4 of the gas block be forward of the handguard, but the adjusting screw for the gas block is now in a real PITA location and I'm probably going to drill a small hole in the handguard so I can get a Allen wrench in there to adjust it. I already contacted Seekins and they only make one length handguard for their SP10 so a longer one isn't an option either.
View attachment 139245

Is it possible to get a different hand guard? Or would I run into compatibly issues?

Thanks for posting that info. How long is your barrel?

 

[jbs2014]

jbs2014,
What factory ammo have you tried and what have you tried for reloads? I'd expect a decent shooter from a Seekins, just wondering what you have been feeding her? If it's not holding up to what it should maybe a phone call is in order. I've had to do it twice on rifles from other manufacturers and both times it was a much more pleasant experience than I expected and yielded the results I was after. Bad barrels happen and manufacturers know and understand it and quality manufacturers like seekins will make it right if they truly aren't making the cut.

For factory ammo I have used hornady match 143 grain projectiles. I have also used the federal loaded with Berger 130 grain bullets.

For reloading I have tried 130 grain Sierra TMKs, 130 grain Berger OTM, and hornady 143 grain ELD. For powders I have tried Superformace, RL16, RL17, H4350 and others ( I'd have too look later). I use federal 210m primers.

 

[B23]

Is it possible to get a different hand guard? Or would I run into compatibly issues?

Thanks for posting that info. How long is your barrel?

I'm not sure any other handguards will work with the Seekins SP10, I could be wrong on that though, but I do know Seekins doesn't make a longer one for the SP10 because I already talked to them and as of now, they don't have any intentions of making a longer one.

The Proof barrel I put on my SP10 is 22 inches. I went back and forth on going 20 or 22 and finally decided on the 22. My 6.5 suppressor is a SAS barricade and they're slightly shorter than most of the 6.5 cans so that helped push me toward the 22.

 

[ntsqd]

As I recall the Seekins SP10's are monolithic. The SP3Rv3 is the only hand-guard that will fit due to it's shape and the upper being machined specifically to fit it.

 

[jbs2014]

W

I'm not sure any other handguards will work with the Seekins SP10, I could be wrong on that though, but I do know Seekins doesn't make a longer one for the SP10 because I already talked to them and as of now, they don't have any intentions of making a longer one.

The Proof barrel I put on my SP10 is 22 inches. I went back and forth on going 20 or 22 and finally decided on the 22. My 6.5 suppressor is a SAS barricade and they're slightly shorter than most of the 6.5 cans so that helped push me toward the 22.

did you have a significant velocity reduction with that 22" barrel vs a 24" barrel?

 

[B23]

W

did you have a significant velocity reduction with that 22" barrel vs a 24" barrel?

My SP10 was originally the 308 version, but considering the 6.5CM doesn't shoot a great deal of powder, I'd be very surprised if there was 50-60 fps difference between the 22 and 24.

 

[Deviant]

Anyone know who makes a decent 24" 6.5 Creedmoor AR10 barrel?

Anyone here use the carbon fiber AR10 barrels? How do they perform?

I am pretty sure at this point that I have a bad barrel on the Seekins Precision AR10 that I have.

Just put a Proof Research 22" 6.5 Creedmoor barrel on my F1 BDR 10 but Im still breaking it in.

 

[Deviant]

Proof Research makes a 20", 22" and 24". All are a +2 rifle length gas system so you may need a longer gas tube than you currently have and they use a .875" gas journal diameter so likely need a new gas block as well. I have one of their 20" Carbon Fiber barrels and the accuracy is incredible and the weight savings is a plus. Coyotes don't care for it though.

Mine came with the extended gas tube.

 

[Deviant]

I would use a Superlative Arms gas block with the +2 length gas system. Easy to adjust since the screw is in the front.

 

[B23]

W

did you have a significant velocity reduction with that 22" barrel vs a 24" barrel?

I would use a Superlative Arms gas block with the +2 length gas system. Easy to adjust since the screw is in the front.View attachment 139294

Your GB appears to stick out about the same as it does on my SP10. Good looking piece you have there.