BCM vs DD 300 Blackout Barrel

Pay2Play · Nov 26, 2017

I’m finally getting around to building an upper for one of the 2 lowers I purchased before Oct. 2013. I’m between 2 different barrels and was wondering if you guys would choose one over the other for any particular reasons. They are only $20 apart in price.

Bravo Company 16” Enhanced Fluted 300BLK Barrel:
https://www.bravocompanyusa.com/BCM-16-ENHANCED-FLUTED-300-Blackout-Barrels-p/bcm-brl-16f-300.htm

Daniel Defense 17” S2W 300BLK Barrel:
https://danieldefense.com/cold-hammer-forged-barrels/16-inch-chf-barrels/16-300-blk-s2w-carbine-chf-barrel.html

Thanks for your help. :thumbsup:

Orthogonal · Nov 26, 2017

Why waste a pre 10/13 lower on a 300BLK build ? 300BLK doesn't need it in any configuration.

vgplayer · Nov 26, 2017

BCM is 0.75 lbs lighter.

Pay2Play · Nov 26, 2017

Orthogonal said:
Why waste a pre 10/13 lower on a 300BLK build ? 300BLK doesn't need it in any configuration.

That’s a good point that I didn’t think about. When I bought them I built one lower with a rifle stock and the other with a pistol buffer tube that I’m now going to take a part and build into a rifle since pistols are still legal. I already own a Daniel Defense V1 so I figured I’d build a 300BLK to have a different caliber. If I don’t do that I’m not sure what to build. Maybe a 18” barrel long range 5.56 setup. So many decisions.

clandestine · Nov 26, 2017

Neither one. Dont buy a .300 barrel with carbine gas if you plan to run subs.

Pay2Play · Nov 26, 2017

clandestine said:
Neither one. Dont buy a .300 barrel with carbine gas if you plan to run subs.

I didn’t have any immediate plans to add a suppressor, but I wouldn’t rule it out in the future. If I went with pistol length I’d either have to do an AR pistol or SBR. Is there any reason to not go with the carbine gas and regular ammo?

clandestine · Nov 26, 2017

Pay2Play said:
I didn’t have any immediate plans to add a suppressor, but I wouldn’t rule it out in the future. If I went with pistol length I’d either have to do an AR pistol or SBR. Is there any reason to not go with the carbine gas and regular ammo?

Not pistol length barrel. Pistol length gas.

Carbine Gas wont usually run reliably with subsonic .300 ammo. It can be donw but it takes a good AR builder/tuner.

16" Barrel with pistol gas will be more forgiving and should not require tuning.

DaemonAssassin · Nov 26, 2017

Take a look at this one. If you are smart with the build, you can maintain sub-MOA with the 300BLK. I have built 2 uppers with this barrel and it is a good barrel for the price tag, from my personal experiences.

https://www.kakindustry.com/ar-15-p...h/contract-300-16-inch-pistol-melonite-barrel

BradMacc82 · Nov 26, 2017

clandestine said:
Not pistol length barrel. Pistol length gas.

Carbine Gas wont usually run reliably with subsonic .300 ammo. It can be donw but it takes a good AR builder/tuner.

16" Barrel with pistol gas will be more forgiving and should not require tuning.

Absolutely!!

All of my previous 300BLK's ran a pistol length gas system (16" and 12.5" barrels), and it was the right choice then, and is still the right choice.

Pay2Play · Nov 26, 2017

clandestine said:
Not pistol length barrel. Pistol length gas.

Carbine Gas wont usually run reliably with subsonic .300 ammo. It can be donw but it takes a good AR builder/tuner.

16" Barrel with pistol gas will be more forgiving and should not require tuning.

Aha, gotcha. Excuse my ignorance. I had only seen 16” barrels with carbine and above length gas systems and assumed you had to go under 16” to get a pistol system. Thanks for the info.

Pay2Play · Nov 26, 2017

DaemonAssassin said:
Take a look at this one. If you are smart with the build, you can maintain sub-MOA with the 300BLK. I have built 2 uppers with this barrel and it is a good barrel for the price tag, from my personal experiences.

https://www.kakindustry.com/ar-15-p...h/contract-300-16-inch-pistol-melonite-barrel

Thanks for the recommendation. I just read through the reviews and everybody is extremely happy with it.

DaemonAssassin · Nov 26, 2017

Pay2Play said:
Thanks for the recommendation. I just read through the reviews and everybody is extremely happy with it.

I know two of the reviewers, and one of the reviewers rifles is with me, in case he shows for deer season.

Pay2Play · Nov 28, 2017

One more question for you guys. Does it matter if I go with 1-7 vs 1-8 twist?

Thanks again for all the help.

DevinRPD · Nov 28, 2017

Pay2Play said:
One more question for you guys. Does it matter if I go with 1-7 vs 1-8 twist?

Thanks again for all the help.

ive got both 1:7 8 inch and 1:8 9 inch barreled uppers and i dont see any difference at 100 yards with 123 grain FMJ's. im pretty sure youre only going to want to use a 1/7 if your are planning on using anything over 200 grain

rtse4me · Nov 28, 2017

Another choice to consider. Friend has one and likes it.
Not sure their sale is still going on but it is $270 with the discount and a free flashider
https://www.noveske.com/collections/barrels/products/300-aac-blackout-barrel

Sev89 · Nov 28, 2017

Slight thread jack, but as someone who got a barrel with a carbine length system, what are my options for how to optimize said barrel for both sub and super sonic ammo?

clandestine · Nov 28, 2017

Sev89 said:
Slight thread jack, but as someone who got a barrel with a carbine length system, what are my options for how to optimize said barrel for both sub and super sonic ammo?

Buy a new barrel or dump lots of money into it.

Adjustable SLR Gas Block
SpringCo Reduced Power Action Spring
Carbine Buffer
Open Gas Port to .120
Allign Gas Block with Bore Scope
Polish Carrier Belly and lower Bolt Lug Bearing Surfaces
Gauge Gas Key Bore to ensure it is not oversized

FYI if you cheap out and opt to not get adjustable gas, you will beat the living hell out of the gun when supersonic ammo is shot in that configuration and the gas isn't restricted.

Pay2Play · Nov 28, 2017

DevinRPD said:
ive got both 1:7 8 inch and 1:8 9 inch barreled uppers and i dont see any difference at 100 yards with 123 grain FMJ's. im pretty sure youre only going to want to use a 1/7 if your are planning on using anything over 200 grain

Perfect. I was already leaning toward 1-8.

rtse4me said:
Another choice to consider. Friend has one and likes it.
Not sure their sale is still going on but it is $270 with the discount and a free flashider
https://www.noveske.com/collections/barrels/products/300-aac-blackout-barrel

I didn’t see any discount codes and when I select the 16” length the price jumps to $455! I think I have it narrowed down to these two Wilson Combat barrels:

http://shopwilsoncombat.com/Match-Grade-Barrel-300-AAC-Blackout-Recon-Tactical-16-1-8-Twist-Stainless-Fluted/productinfo/TR%2D300RC16F/

http://shopwilsoncombat.com/Match-Grade-Barrel-300-AAC-Blackout-Recon-Tactical-16-1-7-Twist-Carbon-with-Melonite-Finish-Fluted/productinfo/TR%2D300RC16F%2D17%2DM/

clandestine said:
Buy a new barrel or dump lots of money into it.

Adjustable SLR Gas Block
SpringCo Reduced Power Action Spring
Carbine Buffer
Open Gas Port to .120
Allign Gas Block with Bore Scope
Polish Carrier Belly and lower Bolt Lug Bearing Surfaces
Gauge Gas Key Bore to ensure it is not oversized

FYI if you cheap out and opt to not get adjustable gas, you will beat the living hell out of the gun when supersonic ammo is shot in that configuration and the gas isn't restricted.

I didn’t realize the need for the adjustable gas block. Thanks for the info.

clandestine · Nov 29, 2017

Pay2Play said:
Perfect. I was already leaning toward 1-8.

I didn’t see any discount codes and when I select the 16” length the price jumps to $455! I think I have it narrowed down to these two Wilson Combat barrels:

http://shopwilsoncombat.com/Match-Grade-Barrel-300-AAC-Blackout-Recon-Tactical-16-1-8-Twist-Stainless-Fluted/productinfo/TR%2D300RC16F/

http://shopwilsoncombat.com/Match-Grade-Barrel-300-AAC-Blackout-Recon-Tactical-16-1-7-Twist-Carbon-with-Melonite-Finish-Fluted/productinfo/TR%2D300RC16F%2D17%2DM/

I didn’t realize the need for the adjustable gas block. Thanks for the info.

The adjustable Gas Block is not required for all Blackout applications. Its setup specific.

BCM vs DD 300 Blackout Barrel

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