Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels and Ballistics


Reply

338 Lapua Build - Barrel length

 
LinkBack Thread Tools Display Modes
  #1  
Old 10-28-2008, 06:33 AM
Silver Member
 
Join Date: Mar 2006
Location: Alberta
Posts: 155
338 Lapua Build - Barrel length

This may be splitting hairs, but I am getting hung up on 29" vs 28" barrel length (plus 2 " with brake) for the new barrel on my 700P 338 Lapua. The stock will likely be my A5. Is there will be a noticeable difference between the two lengths - if no, 28" may be better for me ? However...

I want to maximize the 'real' potential of the 338 Lapua at the range and in the field, and want this to be a dedicated LR rig. This will not be a multi-purpose rifle, and I intend it for shots at 800-2000 yards +. The area I will use it in is windy, wide open prairie and the river breaks in southern, Aberta and huge, open fields in the north. I will likely hike at most 10 km, and more realistically ride in on my mountain bike followed by short 1-2 km hikes, but I do like to hike. I want the rifle to be manageable and portable, and 29" (31" length with brake) is as long as I want to go. I like the flat trajectory of the 250 grain SMK's and 250 Accubonds, but will likely end up shooting 300 SMK's exclusively.

The barrel I have will go just over 29" finished length (31" with brake). I really want to extract as much as I can with this 338 Lapua, and want the most out of it if it will make a 'real' difference. Does the extra velocity of the 29" mean anything over the 28" ?

However, the 28" barrel (30" with brake) is certainly tempting 'cause it will be [slightly] stiffer, handier, and easier to find a gun case for.

Would it make any difference if I went 29" vs 28"? I am seeking advise on the barrel length for my intended use - the last detail for the build. Thanks

Last edited by Kalashnikov; 10-29-2008 at 11:31 PM.
Reply With Quote
  #2  
Old 10-28-2008, 11:06 AM
Junior Member
 
Join Date: Aug 2008
Location: Fort Benning, GA
Posts: 27
Re: 338 Lapua Build - Barrel length

I faced the same problem recently. My original barrel was 34" w/o a brake and wanted something a little lighter.

I ended up with a 28" plus a brake. Still managed 2910fps with a 300SMK.

Final load is 108.5gr of US 869 with 215GM primer, Lapua brass and the 300SMK with a 4.100 OAL.
Reply With Quote
  #3  
Old 10-28-2008, 10:36 PM
Silver Member
 
Join Date: Mar 2006
Location: Alberta
Posts: 155
Re: 338 Lapua Build - Barrel length

4.1 AOL - what action/bottom metal are you using. Sounds like very good velocity.

The 28" has it's appeal, but so does a longer tube.
Reply With Quote
  #4  
Old 10-29-2008, 12:48 PM
Junior Member
 
Join Date: Aug 2008
Location: Fort Benning, GA
Posts: 27
Re: 338 Lapua Build - Barrel length

SAKO -TRG with factory magazine. I have to short seat rounds to 3.750 if I need the mag for hunting but the chamber is cut for the 4.100. Majority of time I shoot singles so it not a big deal.

Doesn't seem to effect group size much at short to moderate range.
Reply With Quote
  #5  
Old 10-29-2008, 04:47 PM
Silver Member
 
Join Date: Mar 2006
Location: Alberta
Posts: 155
Re: 338 Lapua Build - Barrel length

For those who have run/are running 28" barrels with any of the big 338's, what performance/velocity are you getting ? Thanks
Reply With Quote
  #6  
Old 10-29-2008, 06:37 PM
Platinum Member
 
Join Date: Aug 2005
Location: Back in the south -NW FL..
Posts: 1,141
Re: 338 Lapua Build - Barrel length

25-30fps difference in 1" of barrel length.
__________________
AIPAC for president !!!!!!!!!!!!!!!!!!!
Reply With Quote
  #7  
Old 10-29-2008, 08:12 PM
Platinum Member
 
Join Date: Feb 2004
Location: Pennsyltucky
Posts: 2,623
Re: 338 Lapua Build - Barrel length

i can assure you the ability to kill at the distances you mention, will be no different with a 28 than it will be with a 29. go to Lilja's web site and look at the velocity differences he obtained starting with a 46" barrel then cutting off 2" at a time and chrono'd the velocity of each barrel length. the difference between a 44" barrel and a 24" was only 232 fps. you might gain 15fps with a 29 over a 28.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: 338 Lapua Build - Barrel length
Thread Thread Starter Forum Replies Last Post
Optimum barrel length and profile 338 Lapua 300WSMMAD Rifles, Bullets, Barrels and Ballistics 8 05-30-2010 04:59 PM
Barrel length on rifle build Briancrn113 Rifles, Bullets, Barrels and Ballistics 8 04-24-2010 04:34 PM
Barrel length on new build? MSLRHunter Rifles, Bullets, Barrels and Ballistics 4 12-07-2009 12:26 AM
Max barrel length for 338 Lapua and 300RUM tunofun Rifles, Bullets, Barrels and Ballistics 8 03-30-2005 07:19 PM
338 lapua barrel length Long Range Hunting & Shooting 10 07-12-2002 03:58 PM

Current Poll
Have You Ever Backpack Hunted?
YES - 62.21%
1,047 Vote
NO - 37.79%
636 Votes
Total Votes: 1,683
You may not vote on this poll.

All times are GMT -5. The time now is 06:15 AM.


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