The Frontier Sixshooter Community Message Board - OOOOOOOOOOOOOO

OOOOOOOOOOOOOO (reply)

A K Church — Fri, 09 Aug 2024 08:32:22 +0000

So Suppressor John, tell us more, PLEASE.

OOOOOOOOOOOOOO (reply)

A K Church — Fri, 09 Aug 2024 01:14:52 +0000

AHHHHHHHHHHHHHHHH!

And this... (reply)

JohnKDM — Fri, 09 Aug 2024 01:05:13 +0000

And then there's this..... (reply)

A K Church — Thu, 08 Aug 2024 22:28:55 +0000

Spoke to a customer I knew shot quiet guns, but didn't know had an SBR.

His is a pawnshop acquired 1960s Remington 700, rebarreled to .300. Aftermarket trigger and safety. Some really plain uninteresting walnut, and some manner of 2x7 glass.

A threaded muzzle, length just past the forend yielded 10.5". Shoots fine.

Now with this setup, his loads, factory or home rolled, are evaluated purely for accuracy and decibels. No cycling involved, and no port pop.

Yepper doodles, he is not happy with the sound. Not all that quiet.

So 8 point 5 is looking good.

Here you go AK...... (reply)

A K Church — Thu, 08 Aug 2024 22:16:56 +0000

Tonk Yew, Herr Gunnar!

Here you go AK...... (reply)

Gunner — Thu, 08 Aug 2024 16:13:22 +0000

https://palmettostatearmory.com/psa-8-5-pistol-length-300aac-blackout-1-8-phosphate-7-l...

PSA is calling

Gunner

10 inch.....suppressed (reply)

Gunner — Tue, 06 Aug 2024 17:31:43 +0000

Q Trash Panda suppressor on my 10.5" 300 Blackout......

https://www.youtube.com/watch?v=dpRWa_UA0R8

My Razor 7.62 can is a touch louder.

Gunner

10 inch (reply)

Miles — Tue, 06 Aug 2024 16:02:11 +0000

Even using 220 gr at purported subsonic velocity, and using the Surefire RC2 suppressor which you are familiar with, both Tom & I were surprised at how loud it is.

Query to the .300 Whisper/BO shooters out there: (reply)

Slow Hand — Tue, 06 Aug 2024 00:59:54 +0000

11.5” is recommended for the 5.56. The .300 is a whole different creature.

Query to the .300 Whisper/BO shooters out there: (reply)

Slow Hand — Tue, 06 Aug 2024 00:58:43 +0000

Going off of memory, but the .300 blk aka .300 whisper was developed with around an 8” barrel in mind, shooting subsonic, suppressed. I’d have to check mine but I believe my sbr is either 8” or 8.5” and si mainly shot suppressed (99% of the time) sit subsonic ammo (80% of the time) and performs as expected.

Thanks Guys! N/T (reply)

A K Church — Mon, 05 Aug 2024 15:26:37 +0000

N/T

Query to the .300 Whisper/BO shooters out there: (reply)

Gunner — Mon, 05 Aug 2024 14:32:24 +0000

Military likes 6.5" barrels in the 300 Blackout as they want compact guns for CQB type work. Most experts/industry people says 8.5-10.5" barrel is the best range. I have a 10.3" and 10.5", with a can they don't feel long, though don't feel short either. I see everything from 5.5" to 16" barrels but feel like you get the most out of a 9-10", that is high velocity and sub sonic shooting. If you are only shooting sub sonic loads and want compact OAL do a 6"-8" barrel. Those big 220gr slugs shoot fine out of the short barrels. Remember shorter barrel equal less velocity means quieter gun.

Chornograph data shows 220gr sub loads run around 950 fps from a 10.5" while the 150gr run 1750 fps.

Gunner

Query to the .300 Whisper/BO shooters out there: (reply)

Fivegunner — Mon, 05 Aug 2024 13:15:03 +0000

11.5 inch is what I would do for SBR, I am building a 223/556 with 11.5 barrel, ofcorse with a can .

Query to the .300 Whisper/BO shooters out there:

A K Church — Mon, 05 Aug 2024 11:33:13 +0000

What would you consider the optimum length barrel for an AR15 sbr,

pretty much to be used only with heavy subsonic, and

pretty much to be operated suppressed?

Assume I know very little.