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4/18/2026 7:39:55 PM EDT
[Last Edit: scottMO][Edited]
I have a Ruger American ranch in 300 blackout that is 16 inches that I use with a can. What advantages will I gain if I SBR it and cut off the barrel down to the fore end?


Attached File
Ever see a lion after he eats a zebra? - MrClean4Hire (RIP Brother)
I hate waiting, but I really hate waiting to wait. - sgtgeo (having to wait on a Form 3 before sending a Form 4).
4/18/2026 7:56:58 PM EDT
[#1]
For subsonic suppressed rounds, wasn’t it designed around an 8.5” barrel?   If that was my plan then I’d shorten.
4/18/2026 8:02:28 PM EDT
[Last Edit: scottMO][Edited] [#2]
Originally Posted By GlockPride:
For subsonic suppressed rounds, wasn’t it designed around an 8.5” barrel?   If that was my plan then I’d shorten.
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Kind of bought this quick as it was listed locally for a great price.   It’s my first 300BO so don’t have much knowledge on the 300 blackout round.  

If I cut the barrel back to just past the stock, it’s gonna be in the 10.5 to 11 inch range.
Ever see a lion after he eats a zebra? - MrClean4Hire (RIP Brother)
I hate waiting, but I really hate waiting to wait. - sgtgeo (having to wait on a Form 3 before sending a Form 4).
4/18/2026 8:14:02 PM EDT
[Last Edit: GlockPride][Edited] [#3]
Quote History
Originally Posted By scottMO:


Kind of bought this quick as it was listed locally for a great price.   It’s my first 300BO so don’t have much knowledge on the 300 blackout round.  

If I cut the barrel back to just past the stock, it’s gonna be in the 10.5 to 11 inch range.
View Quote


I don’t believe that the subsonic rounds be hampered by 10.5” because I don’t know that the bullet is still accelerating but should help with supersonic rounds gain more fps vs shorter barrel.  I don’t own a .300, but have done a bit of research due to varying interest over the years.
4/19/2026 7:45:53 AM EDT
[#4]
I wonder how cutting and threading that barrel in the middle of the flutes is going to work out.
4/19/2026 9:10:39 AM EDT
[#5]
Quote History
Originally Posted By GlockPride:


I don’t believe that the subsonic rounds be hampered by 10.5” because I don’t know that the bullet is still accelerating but should help with supersonic rounds gain more fps vs shorter barrel.  I don’t own a .300, but have done a bit of research due to varying interest over the years.
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Quote History
Originally Posted By GlockPride:
Originally Posted By scottMO:


Kind of bought this quick as it was listed locally for a great price.   It’s my first 300BO so don’t have much knowledge on the 300 blackout round.  

If I cut the barrel back to just past the stock, it’s gonna be in the 10.5 to 11 inch range.


I don’t believe that the subsonic rounds be hampered by 10.5” because I don’t know that the bullet is still accelerating but should help with supersonic rounds gain more fps vs shorter barrel.  I don’t own a .300, but have done a bit of research due to varying interest over the years.

I read the 300 achieves full burn around the 10"-11" range, who knows.  My Springfield AR15 in 300 has, I believe, a 10.5 barrel.  You gain shortness, maneuverability, since your running subs velocity shouldn't be a big deal.  My Ruger Ranch in 300 BO w/ Red Dot is one of my most fun guns.
4/20/2026 2:13:56 PM EDT
[#6]
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Originally Posted By squirrel_herder:
I wonder how cutting and threading that barrel in the middle of the flutes is going to work out.
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Can’t remember if it was here or somewhere on reddit I saw someone had to thread theirs 1/2x28 because of the flutes
4/20/2026 2:30:12 PM EDT
[#7]
Quote History
Originally Posted By bmarshall1:

I read the 300 achieves full burn around the 10"-11" range, who knows.  My Springfield AR15 in 300 has, I believe, a 10.5 barrel.  You gain shortness, maneuverability, since your running subs velocity shouldn't be a big deal.  My Ruger Ranch in 300 BO w/ Red Dot is one of my most fun guns.
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9” is what I’ve heard. OP there’s just about zero point to a 16” .300blk, chop it as short as you can.
4/20/2026 3:02:08 PM EDT
[#8]
Originally Posted By Izhevsk54r:


Can’t remember if it was here or somewhere on reddit I saw someone had to thread theirs 1/2x28 because of the flutes
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It was on Reddit, I saw that too.
Ever see a lion after he eats a zebra? - MrClean4Hire (RIP Brother)
I hate waiting, but I really hate waiting to wait. - sgtgeo (having to wait on a Form 3 before sending a Form 4).
5/20/2026 6:07:49 PM EDT
[#9]
Attached File


I decided to SBR my gen 1 Ruger American ranch in 300BO.
Ever see a lion after he eats a zebra? - MrClean4Hire (RIP Brother)
I hate waiting, but I really hate waiting to wait. - sgtgeo (having to wait on a Form 3 before sending a Form 4).
5/24/2026 8:45:45 AM EDT
[#10]
OP,  How's it shoot? Are you using it more for subs or supers?
I'm not here because I make sound financial decisions.
7/10/2026 2:07:02 PM EDT
[#11]
Quote History
Originally Posted By scottMO:
https://www.ar15.com/media/mediaFiles/2158/IMG_4923_jpeg-3765524.JPG

I decided to SBR my gen 1 Ruger American ranch in 300BO.
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Looks good. I am also a fan of the Gen 2 stock on a Gen 1. I saw the Gen 2 stock on eBay for $80 and snatched it up asap.

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