11.5" 300BLK barrel?

Discussion about rifles in 300 AAC BLACKOUT (7.62x35mm), hosted by the creator of the cartridge.

Moderators: gds, bakerjw, renegade

User avatar
kdcgrohl
Member
Posts: 39
Joined: Sun Jul 20, 2008 7:28 pm
Location: VA

11.5" 300BLK barrel?

Post by kdcgrohl »

Is there any source for a quality 300 Blackout barrel in 11.5"?
Would it be worth it to wait for the AAC barrel and chop it?
The reason for the specific size is I want the shortest possible OAL with a Knight's midlength URXII. :wink:
Thanks.
knoxville
Silent Operator
Posts: 93
Joined: Sun Jan 09, 2011 3:28 pm

Re: 11.5" 300BLK barrel?

Post by knoxville »

Call Aaron at Delta Company Arms! He will get you taken care of on a barrel specific to your needs and aplication. You should also save some cost instead of cutting an re-threading the AAC.
User avatar
JasonAAC
Industry Professional
Posts: 214
Joined: Thu Jul 02, 2009 4:08 pm
Location: VA
Contact:

Re: 11.5" 300BLK barrel?

Post by JasonAAC »

I would have one made rather than chop the AAC.

First, the finish is amazingly hard and will be very tough on tooling. Second, Roberts done a ton of work and testing to tune the gasport size to the particular barrel length(s)
Kick Ass Design
User avatar
JasonAAC
Industry Professional
Posts: 214
Joined: Thu Jul 02, 2009 4:08 pm
Location: VA
Contact:

Re: 11.5" 300BLK barrel?

Post by JasonAAC »

a 12.5 with mid-length URX will look like the fourth one from the bottom:
Image
Kick Ass Design
User avatar
kdcgrohl
Member
Posts: 39
Joined: Sun Jul 20, 2008 7:28 pm
Location: VA

Re: 11.5" 300BLK barrel?

Post by kdcgrohl »

JasonAAC wrote:I would have one made rather than chop the AAC.

First, the finish is amazingly hard and will be very tough on tooling. Second, Roberts done a ton of work and testing to tune the gasport size to the particular barrel length(s)

Pardon my ignorance, as I'm new to this caliber... But would 1" taken from a 12.5" barrel have an effect on the gas port sizing?
User avatar
300Blk
Site Admin
Posts: 7331
Joined: Mon Apr 25, 2005 9:31 am
Location: USA

Re: 11.5" 300BLK barrel?

Post by 300Blk »

Yes, shorter barrels need larger gas ports.

But the difference would be small, and you would not necessarily need to change it or notice any difference.

This is not due to this caliber - the same applies to 5.56mm.
User avatar
JasonAAC
Industry Professional
Posts: 214
Joined: Thu Jul 02, 2009 4:08 pm
Location: VA
Contact:

Re: 11.5" 300BLK barrel?

Post by JasonAAC »

silencertalk wrote:Yes, shorter barrels need larger gas ports.

But the difference would be small, and you would not necessarily need to change it or notice any difference.

This is not due to this caliber - the same applies to 5.56mm.
And the AAC ports are sized to run all combos of supersonic/subsonic/suppressed/unsuppressed so it's not necessarily a problem, just something to keep in mind.
Kick Ass Design
User avatar
kdcgrohl
Member
Posts: 39
Joined: Sun Jul 20, 2008 7:28 pm
Location: VA

Re: 11.5" 300BLK barrel?

Post by kdcgrohl »

silencertalk wrote:Yes, shorter barrels need larger gas ports.

But the difference would be small, and you would not necessarily need to change it or notice any difference.

This is not due to this caliber - the same applies to 5.56mm.
That's what I was thinking. The only barrel cutting I've had experience with has been 16" -> 14.5" in 5.56. No port adjusting was necessary.

Thank you guys for the replies. Any updates on the AAC barrels?

Any other thoughts?
User avatar
kdcgrohl
Member
Posts: 39
Joined: Sun Jul 20, 2008 7:28 pm
Location: VA

Re: 11.5" 300BLK barrel?

Post by kdcgrohl »

knoxville wrote:Call Aaron at Delta Company Arms! He will get you taken care of on a barrel specific to your needs and aplication. You should also save some cost instead of cutting an re-threading the AAC.
Are these SS barrels?
User avatar
LYNRDSKYNRD
Silent Operator
Posts: 85
Joined: Wed Jan 26, 2011 5:31 pm
Location: Heart of Dixie

Re: 11.5" 300BLK barrel?

Post by LYNRDSKYNRD »

kdcgrohl wrote:Any other thoughts?
Call Aaron at Delta Company Arms! He will get you taken care of on a barrel specific to your needs and aplication. You should also save some cost instead of cutting an re-threading the AAC.
+1
"People sleep peaceably in their beds at night only because
rough men stand ready to do violence on their behalf."
George Orwell
Post Reply

Who is online

Users browsing this forum: No registered users and 62 guests