Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Equipment Discussions


Reply

338 Build Thoughts - 2400 yards!

 
LinkBack Thread Tools Display Modes
  #1  
Old 03-25-2010, 11:11 AM
Junior Member
 
Join Date: Feb 2009
Posts: 8
338 Build Thoughts - 2400 yards!

Ok so I dont really post here much but I think you guys may be able to help me out.

So here is the deal. And yes Ive been doing a metric ****-ton of reading both here and on other forums and have just a few questions in case any of you are willing to help me out. Ive been seriously tinkering with the idea of building a 338 of which I want to push to its absolute limits. My goals are as follows.

I want to be able to use both the 250 and 300 grain pills from Lapua or SMK.
Ideally I would like to push the 300grain pill to around 2900fps
Decent brass life
Decent barrel life.

Ive been doing the comparisons between the 338LM, 338 Norma Mag, and 338 IMP 40* shoulder (which I assume is the 338 Ackley Improved?)

I havent been able to find much on velocity, brass life, or barrel life of the 338 Norma but from what I have found, the specs, appears to be very similar to the 338LM but with a shortened case.

From everything ive read, it sounds as though my options are fairly limited but wanted to touch base with those of you that know more then me.

Also, Ive read of barrels everywhere from 9.3, 9.4, 9.5, and 10 twist. Thoughts?

My goal is to see if I can push the 300 grain to 2400 yards. Yes I know its subsonic at that range and will require anywhere from 120-130 MOA but this is a bit of a test for me. No I do not want to go to a 338/408, 375, or 408. I also understand the 338 Edge but from what I can gather, barrel and brass life is less then ideal.

It seems as though the 338 IMP appears to have the best brass life, barrel life, and least amount of pressure issues when sending the 300 near the 2900fps mark.

Any thoughts, experiences, of suggestions would be greatly appreciated.

And before anyone asks, No I dont ever plan on taking a shot at an animal at a distance like that. I picked 2400 as the mark because its just below where the round will be subsonic and will be a helluva challenge.

I like challenges.
Reply With Quote
  #2  
Old 03-25-2010, 06:38 PM
Official LRH Sponsor
 
Join Date: Jul 2006
Location: Harrisburg, PA
Posts: 2,263
Re: 338 Build Thoughts - 2400 yards!

There's a boat load of reasons why the .338-.408 would be the logical choice of all the .338's, but I won't elaborate, as you stated in your post that you don't want to build on that platform.
So, my bid for the distance you want to reach is the .338 Lapua. You won't gain much in the velocity department by going to the improved case, but you will in the efficiency department...
Pick your twist of barrels that you referenced, they will all work fine.

I'm all for challenges too, I just like to stack the deck in my favor.
Reply With Quote
  #3  
Old 03-25-2010, 06:42 PM
Junior Member
 
Join Date: Feb 2009
Posts: 8
Re: 338 Build Thoughts - 2400 yards!

Quote:
Originally Posted by Joel Russo View Post
There's a boat load of reasons why the .338-.408 would be the logical choice of all the .338's, but I won't elaborate, as you stated in your post that you don't want to build on that platform.
So, my bid for the distance you want to reach is the .338 Lapua. You won't gain much in the velocity department by going to the improved case, but you will in the efficiency department...
Pick your twist of barrels that you referenced, they will all work fine.

I'm all for challenges too, I just like to stack the deck in my favor.
Yeah I know all about that awesome rig of yours. And it was good meeting you out at Thunder Valley during the suppressor shoot. Are you going to make it out there much this year?
Reply With Quote
  #4  
Old 03-25-2010, 11:01 PM
Platinum Member
 
Join Date: Jan 2004
Location: Blackfoot, Idaho
Posts: 8,090
Re: 338 Build Thoughts - 2400 yards!

Do a search on "thunder" on here and look for anything that says '338 Thunder'.

Should be some decent reading.....
Reply With Quote
  #5  
Old 03-26-2010, 12:47 AM
Platinum Member
 
Join Date: Nov 2008
Posts: 1,047
Re: 338 Build Thoughts - 2400 yards!

flounder,
I have shot my .338 Edge out to 2285 yards from a M.V. of over 2900 fps, and can tell you that a 1 : 10 twist barrel will not stabilize the 300 SMK through the transonic barrier.
B.C. goes to hell after 2000 yards and 300SMK bullets drop like rocks, and land all over the place.
Had better luck with 250 grain bullets with the 1 : 10 twist they shoot OK at these distances.

You will need a lot of elevation to get up 120 MOA. Maxed out my turret and then used my scope on a lower power setting to get more MOA from my reticle hash marks.

This sort of shooting is great fun......good luck and let us know how you get on.
__________________
scientia est potentia
Reply With Quote
  #6  
Old 03-26-2010, 07:07 AM
Official LRH Sponsor
 
Join Date: Jul 2006
Location: Harrisburg, PA
Posts: 2,263
Re: 338 Build Thoughts - 2400 yards!

Quote:
Originally Posted by flounder View Post
Yeah I know all about that awesome rig of yours. And it was good meeting you out at Thunder Valley during the suppressor shoot. Are you going to make it out there much this year?
Good to hear from you flounder, you jogged my memory...

I thought you had a .338-.408 at that last shoot?? Maybe I'm getting you mixed up with one of the other forum members that was there..

Tom called and asked us to come this weekend. Short notice, and we won't have a new rifle completed to do some testing way on out there.
I suspect we'll get there in the next few weeks.

Shoot me a PM when you know when you'll be there.
Reply With Quote
  #7  
Old 03-26-2010, 07:43 AM
Junior Member
 
Join Date: Feb 2009
Posts: 8
Re: 338 Build Thoughts - 2400 yards!

Quote:
Originally Posted by Joel Russo View Post
Good to hear from you flounder, you jogged my memory...

I thought you had a .338-.408 at that last shoot?? Maybe I'm getting you mixed up with one of the other forum members that was there..

Tom called and asked us to come this weekend. Short notice, and we won't have a new rifle completed to do some testing way on out there.
I suspect we'll get there in the next few weeks.

Shoot me a PM when you know when you'll be there.
I wish I could afford the 338/408 but no luck there. Its actually going to be pretty tight budget wise for me to build the 338 as is. I just have my 308 right now and there are soo many different builds I would love to be able to try. Im looking for houses right now and hopefully can find one where I can have enough room for a lathe and mill and do my own gunsmithing on my rigs. I dont have any desire to do it as a business though.

I wont be at TVP this weekend either. I am actually going to help a buddy out in his shop for the day and try and get some shooting in. I will definitely let you know next time Im planning on heading to TVP. Hopefully things have been going good for you lately.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: 338 Build Thoughts - 2400 yards!
Thread Thread Starter Forum Replies Last Post
Thoughts on a Savage Switch barrel Build CaptBeach Gunsmithing 10 11-02-2011 09:32 AM
Considering build, thoughts on components? sambo3006 Rifles, Bullets, Barrels and Ballistics 5 10-02-2010 08:49 PM
6mm-06 build thoughts Oklahomahunter Long Range Hunting & Shooting 3 12-16-2009 10:01 PM
Any thoughts,400 yards? farmer7 Long Range Hunting & Shooting 11 01-27-2009 11:44 AM
Thoughts on my new build banded Gunsmithing 9 01-28-2008 12:14 PM

Current Poll
Do you archery hunt for elk?
YES - 31.41%
60 Votes
NO - 52.88%
101 Votes
Not yet, but I plan to. - 15.71%
30 Votes
Total Votes: 191
You may not vote on this poll.

All times are GMT -5. The time now is 11:16 PM.


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