Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > AR15/10 Rifles


Reply

Barrel Length

 
LinkBack Thread Tools Display Modes
  #1  
Old 07-14-2012, 08:55 AM
Bronze Member
 
Join Date: Mar 2012
Location: Northern California
Posts: 66
Barrel Length

What barrel length would be the best on a 308 a.r. and still kill at a 1000 yards?
Reply With Quote
  #2  
Old 07-14-2012, 09:11 AM
Platinum Member
 
Join Date: Jul 2004
Location: Texas
Posts: 5,622
Re: Barrel Length

Quote:
Originally Posted by SteveAreno View Post
What barrel length would be the best on a 308 a.r. and still kill at a 1000 yards?
All though the 308 was designed for shorter barrels for long range shooting a 26 to 28'' barrel
will be nessary to achieve maximum velocity especally with heavy bullets.

The AR becomes awkward with much over 26" but 26''s of barrel would be my minimum length
for your purpose.

J E CUSTOM
__________________
"PRESS ON"
Reply With Quote
  #3  
Old 07-14-2012, 10:22 AM
Bronze Member
 
Join Date: Mar 2012
Location: Northern California
Posts: 66
Re: Barrel Length

308 will burn gas that long? I was thinking 24inch. Any idea what kind of velocity you have at 1000 with a 168gr boat tail from a 26inch?
Reply With Quote
  #4  
Old 07-14-2012, 03:56 PM
Platinum Member
 
Join Date: Jul 2004
Location: Texas
Posts: 5,622
Re: Barrel Length

Quote:
Originally Posted by SteveAreno View Post
308 will burn gas that long? I was thinking 24inch. Any idea what kind of velocity you have at 1000 with a 168gr boat tail from a 26inch?

Depending on the load I used My hottest load with a 168 gr SMK was just over 2800 ft/sec
in a 27.5" barrel. this was a match rifle and was used for 200,300,600,900,1000 and 1100
yard matches.

The gain from 24" to 26" is not as much as 20 to 22'' but it is enough to make a difference
@ 1000 yards.

Rifles with 22 and 24'' barrels were 150 to 250 ft/sec slower than the 27.5" barrel using the 168s.

My 1000 yard velocity was just over 1400 ft/sec with a tough load.

I am not sure how much barrel would be needed before the 308 had no velocity gain but
there is a point of diminishing returns and 28'' seems to be near that point.

Also different barrels of the same length may vary some in velocity (Some are faster than
others) So what you have to decide is what length will best fit your needs and then live with
the velocity you can get.

As long as it stays above subsonic you should be OK. 26 to 28" barrels should do that at 1000+
yards.

J E CUSTOM
__________________
"PRESS ON"
Reply With Quote
  #5  
Old 07-14-2012, 05:06 PM
Bronze Member
 
Join Date: Mar 2012
Location: Northern California
Posts: 66
Re: Barrel Length

So with a 26 inch barrel can you still run a mid length gas system? Or does it give you paracitic loss as far as velocity? I want to run a short hand guard. Like carbine length.
Reply With Quote
  #6  
Old 07-14-2012, 09:14 PM
Platinum Member
 
Join Date: Jan 2008
Location: SOCIALIST CONTROLLED TERRITORY OF NEW YORK
Posts: 4,398
Re: Barrel Length

Quote:
Originally Posted by SteveAreno View Post
So with a 26 inch barrel can you still run a mid length gas system? Or does it give you paracitic loss as far as velocity? I want to run a short hand guard. Like carbine length.
You want to do all this in a 308 Armilite rifle? I dont think you can get a 26" ar barrel with a mid length gas system. You could have it made but any sensable person would try to talk you out of it. It going to look ver silly with a carbine length handguard(7") and a 26" barrel. I would not go more than 20" my self
__________________
"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf"
If you want to shoot Bergers start here!
http://www.longrangehunting.com/arti...accuracy-1.php
Reply With Quote
  #7  
Old 07-14-2012, 09:25 PM
Bronze Member
 
Join Date: Mar 2012
Location: Northern California
Posts: 66
Re: Barrel Length

Well I want it to look like a little Barrett 50. Probably stupid I know but the price of 50 cal and the glorious state I live in I can't have one. I like my ar 15 a lot but I want a bigger round that can reach out there.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: Barrel Length
Thread Thread Starter Forum Replies Last Post
6mm re-barrel brand,length and barrel twist mcseal2 Rifles, Bullets, Barrels & Ballistics 12 11-07-2010 08:14 PM
which break, barrel length, barrel cotour, and twist? nathank Rifles, Bullets, Barrels & Ballistics 1 02-03-2009 08:31 PM
300 RUM Barrel Length River Man Rifles, Bullets, Barrels & Ballistics 31 11-28-2007 10:02 AM
.308 barrel length TireurDelite Rifles, Bullets, Barrels & Ballistics 8 11-26-2005 05:26 PM
Caliber and Barrel Length for New PD Barrel dcgauger Rifles, Bullets, Barrels & Ballistics 14 02-25-2005 07:39 PM


All times are GMT -5. The time now is 12:18 AM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC