The Firing Line Forums

Go Back   The Firing Line Forums > The Hide > The Art of the Rifle: General

Reply
 
Thread Tools Search this Thread
Old November 28, 2021, 10:51 AM   #1
Tawaliga
Member
 
Join Date: January 24, 2016
Posts: 30
Barrel length 300 Win Mag for Suppressor?

What is the shortest length you would go on a 300 win mag to be cut and threaded for a suppressor?
Tawaliga is offline  
Old November 28, 2021, 12:57 PM   #2
Willie Lowman
Senior Member
 
Join Date: March 5, 2009
Location: Uh-Hi-O
Posts: 2,868
shortening the barrel on a Win Mag is not good for velocity which is the whole point of the Win Mag in my opinion.

https://rifleshooter.com/2013/12/300...6-300-win-mag/
__________________
"9mm has a very long history of being a pointy little bullet moving quickly" --Sevens
Willie Lowman is offline  
Old November 28, 2021, 03:07 PM   #3
44 AMP
Staff
 
Join Date: March 11, 2006
Location: Upper US
Posts: 24,534
Federal law sets the minimum barrel length for a rifle at 16".

SO, you can legally go that short (if your state law allows it as well) but in .300 Win mag, its a barking stupid idea which wastes a huge part of the round's potential, and wastes a bunch of your money every time you pull the trigger.
__________________
All else being equal (and it almost never is) bigger bullets tend to work better.
44 AMP is online now  
Old November 28, 2021, 07:14 PM   #4
Shadow9mm
Senior Member
 
Join Date: March 21, 2012
Location: Indianapolis, IN
Posts: 2,217
could do a SBR, but again, why? the whole point of 300 WM is velocity. chopping off barrel length just loses you velocity.

heres an article where they test velocity from 24in down to 16in
https://rifleshooter.com/2013/12/300...6-300-win-mag/

Personally, if you really wanted to suppress the 300, I would cut it down however long the suppressor is, or 16 in, whichever comes first to maintain the same overall length.
__________________
I don't believe in "range fodder" that is why I reload.
Shadow9mm is online now  
Old November 28, 2021, 10:35 PM   #5
jmr40
Senior Member
 
Join Date: June 15, 2008
Location: Georgia
Posts: 10,479
Yes, you lose speed from shorter barrels. But not nearly as much as a lot of folks think and a 20" 300 WM is still going to be faster than a 24" 30-06. And a 20" 300 WM is going to be a LOT faster than a 308 or 30-06 cut down to 20". Look at the data in the link.

Even at 16" the 300 WM was faster than you could get from a 308 shooting 190 gr bullets from a 24" barrel. Yet people recommend a 308 for shorter barrels. If you think about it, it makes more sense to cut a magnum barrel short than a slower standard cartridge.

The biggest downside is noise, and if you're cutting it to use a suppressor then even that is negated.

And... you get some of that velocity back with the suppressor.
__________________
"If you're still doing things the same way you were doing them 10 years ago, you're doing it wrong"

Winston Churchill
jmr40 is offline  
Old November 29, 2021, 10:01 AM   #6
Tawaliga
Member
 
Join Date: January 24, 2016
Posts: 30
I have plenty of other rifles that are short action, shorter barrels, more efficient, blah blah, and those are shot suppressed also......this 300 win has made lots of memories....I'd like to keep using it, just in a different configuration. I got 25# of RL19, IMR 4831, and RL22, so I don't give a rip about burning extra powder.
Tawaliga is offline  
Old November 29, 2021, 12:11 PM   #7
mehavey
Senior Member
 
Join Date: June 17, 2010
Location: Virginia
Posts: 6,208
A suppressor pulls the WinMag down 30db, ...from an unsuppressed 172db
(BTW: 142db is an F100 takeoff in afterburner.)

Ya'll take care now, h`yah?
mehavey is online now  
Old November 29, 2021, 10:38 PM   #8
taylorce1
Senior Member
 
Join Date: November 18, 2005
Location: On the Santa Fe Trail
Posts: 7,582
Depends on the suppressor rating, my SilencerCo Omega 300 is rated for a 20" .300 Win Mag. Just check with the manufacturer for barrel length requirements.
__________________
NRA Life Member
taylorce1 is offline  
Old November 30, 2021, 01:14 PM   #9
44 AMP
Staff
 
Join Date: March 11, 2006
Location: Upper US
Posts: 24,534
There's no free lunch. There is only deciding if what you pay for what you get is worth it.

I'm having a difficult time envisioning any benefit to cutting a magnum barrel short then adding a suppressor, (bringing it back to long length) other than the reduction of muzzle blast.

And there are a number of changes that happen when you do this that could be regarded as drawbacks. And some of them aren't apparent until after the permanent change is made.

Ok, I'm cheap, and I'm old, and not front line infantry or police. I don't spend my days climbing in and out of APCs, helicopters, or other vehicles with a rifle. Nor do I do houseclearing or CQB, and the only overwatch is for deer from a stand. SO, a short handy suppressed rifle is not a priority for me.

I don't see the sense in turning a .300 magnum into a quiet .300 Savage. But, that's just me.
__________________
All else being equal (and it almost never is) bigger bullets tend to work better.
44 AMP is online now  
Old December 1, 2021, 08:26 AM   #10
Tawaliga
Member
 
Join Date: January 24, 2016
Posts: 30
Quote:
Originally Posted by taylorce1 View Post
Depends on the suppressor rating, my SilencerCo Omega 300 is rated for a 20" .300 Win Mag. Just check with the manufacturer for barrel length requirements.
Yeah @taylorce1 that is exactly what I need to do. I tried looking online but I guess I will call/email them and ask

My barrel is also fluted, so that may be a dealbreaker as well...
Tawaliga is offline  
Old December 1, 2021, 02:40 PM   #11
Crankylove
Senior Member
 
Join Date: July 8, 2008
Location: Tooele, Ut
Posts: 1,700
I’ve got a Model 70 in .270 Win I had threaded for suppressor use.

With the 24” barrel, and 9” of suppressor, it is a bit long. Not exactly unwieldy, but that extra 9” is noticeable. I thought quite a bit about cutting the barrel down to 18” or 20”, but ultimately decided to just thread it.

That rifle shoots quite well as is, and is generally used to more open terrain, where the longer combo isn’t a huge bother. I wasn’t worried about losing a little velocity by chopping the barrel, really came down to already having other rifles better suited for use in more wooded/brushy/closed in areas, and no real need to cut the .270 down.

My .338 Federal was built from the start with a suppressor in mind, and got a 16” barrel to help keep length down with the 12” of suppressor that will go on it, if it ever gets out of ATF jail.
__________________
The answer to 1984 is 1776
Crankylove is offline  
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 07:12 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2021 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Page generated in 0.05059 seconds with 10 queries