300 Blackout blast chamber length
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- Silent Operator
- Posts: 99
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300 Blackout blast chamber length
I am going to file a form 1 for a 300 BO. Its going on a bolt gun shooting subs only. Is 1.500" too much blast chamber length for a bolt gun?
Re: 300 Blackout blast chamber length
Yes. Unless you're going for extra low backpressure
300 blackout form 1: http://www.silencertalk.com/forum/viewtopic.php?f=10&t=137293
5.56 form 1:
http://www.silencertalk.com/forum/viewtopic.php?f=10&t=141800&p=955647#p955647
5.56 form 1:
http://www.silencertalk.com/forum/viewtopic.php?f=10&t=141800&p=955647#p955647
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- Silent Operator
- Posts: 99
- Joined: Wed Apr 27, 2016 7:37 pm
Re: 300 Blackout blast chamber length
I was looking at the SIG 762 as a example of what I want to build. It looks as if its close to that.
Re: 300 Blackout blast chamber length
And that can is rated for supersonic 308
300 blackout form 1: http://www.silencertalk.com/forum/viewtopic.php?f=10&t=137293
5.56 form 1:
http://www.silencertalk.com/forum/viewtopic.php?f=10&t=141800&p=955647#p955647
5.56 form 1:
http://www.silencertalk.com/forum/viewtopic.php?f=10&t=141800&p=955647#p955647
- T-Rex
- Silent But Deadly
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Re: 300 Blackout blast chamber length
It depends on which 762 suppressor you're referring. Sig has several models, not all the same.
The QD and DT (Taper-lok) have different chamber designs
First, the Steel and Ti versions are vastly different lengths and one must know which this picture is of, before scaling. (my guess is Ti)
Second, you can't simply measure the blast length and scale, because of the conical and cylindrical differences.
Lastly, the Sig uses equalization ports, down the entire length of the baffle stack, and this must be accounted for in your design.
The Ti versions (much larger volume) are said to work extremely well on 300Blk
The QD and DT (Taper-lok) have different chamber designs
First, the Steel and Ti versions are vastly different lengths and one must know which this picture is of, before scaling. (my guess is Ti)
Second, you can't simply measure the blast length and scale, because of the conical and cylindrical differences.
Lastly, the Sig uses equalization ports, down the entire length of the baffle stack, and this must be accounted for in your design.
300Blk is the first caliber listed, for all of Sig's 762 suppressors.fishman wrote:And that can is rated for supersonic 308
The Ti versions (much larger volume) are said to work extremely well on 300Blk
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- Silent Operator
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- Joined: Wed Apr 27, 2016 7:37 pm
Re: 300 Blackout blast chamber length
Thanks for the info. I was curious about the porting on the baffles and your pics are a great help.
Re: 300 Blackout blast chamber length
Yes, but the point I was making is that the blast chamber of sig cans was designed to handle supersonic 308. That means that it likely isn't IDEAL for subsonic 300blk. even though it does a great job suppressing it, it might be slightly quieter or have less frp with a smaller bc.T-Rex wrote:300Blk is the first caliber listed, for all of Sig's 762 suppressors.fishman wrote:And that can is rated for supersonic 308
The Ti versions (much larger volume) are said to work extremely well on 300Blk
300 blackout form 1: http://www.silencertalk.com/forum/viewtopic.php?f=10&t=137293
5.56 form 1:
http://www.silencertalk.com/forum/viewtopic.php?f=10&t=141800&p=955647#p955647
5.56 form 1:
http://www.silencertalk.com/forum/viewtopic.php?f=10&t=141800&p=955647#p955647