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338 Lapua improved barrel length & twist rate ?

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  #1  
Unread 06-25-2010, 03:16 AM
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Join Date: Nov 2008
Location: Nelson, New Zealand
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338 Lapua improved barrel length & twist rate ?

I have just got a Rem 700 Police Long Range 338 Lapua & I'm going to rebarrel it in Lapua improved.
I'm wanting to get some info on appropriate barrel length & twist.
I will be shooting 300 SMK & Bergers (when they are fixed )
I was thinking 1-10 & at least 30"+ long.
This will be a long range plinking rifle and as such I'm not worried about the weight & want to get max velocity.
I have a 338 Edge for hunting with 1-9 & 30 inch barrel, 2850 fps.
Cheers Greg.
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  •   #2  
    Unread 06-25-2010, 08:53 AM
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    Join Date: Jul 2004
    Location: Texas
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    Re: 338 Lapua improved barrel length & twist rate ?

    Quote:
    Originally Posted by Kiwi Greg View Post
    I have just got a Rem 700 Police Long Range 338 Lapua & I'm going to rebarrel it in Lapua improved.
    I'm wanting to get some info on appropriate barrel length & twist.
    I will be shooting 300 SMK & Bergers (when they are fixed )
    I was thinking 1-10 & at least 30"+ long.
    This will be a long range plinking rifle and as such I'm not worried about the weight & want to get max velocity.
    I have a 338 Edge for hunting with 1-9 & 30 inch barrel, 2850 fps.
    Cheers Greg.
    My recommendation would be pretty much as you have described= a stainless barrel 30 to 34"
    long, In a #7 or 8 taper or contour (Around .900 dia at the muzzle) twist should be a 1 in 10''
    with the velocity you will get and a 3 to 4'' shank for strength where it is needed.

    I like the 8 groove barrels for heavy bullets (Easier on the jackets when engraving).

    Put a good 11 degree crown on it and the break would be optional but if you shoot a silencer
    thread it for both and Enjoy.

    J E CUSTOM
    __________________
    "PRESS ON"
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      #3  
    Unread 06-25-2010, 09:07 AM
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    Join Date: Feb 2009
    Posts: 3,546
    Re: 338 Lapua improved barrel length & twist rate ?

    +1 w/JE. I'm doing a 338AX with a Krieger 31" 1:10 twist #17-Heavy Varmint 1.25" for 5" then .900 at the muzzle.
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      #4  
    Unread 06-25-2010, 02:14 PM
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    Join Date: Oct 2007
    Posts: 165
    Re: 338 Lapua improved barrel length & twist rate ?

    My specs are close to the other suggestions. I am going with a 30" barrel 1.35" shank for 5" then tapers to .850. It will be fluted and have a brake.

    aroshtr
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      #5  
    Unread 06-27-2010, 06:07 PM
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    Join Date: Jan 2009
    Location: Centre County, Pa
    Posts: 238
    Re: 338 Lapua improved barrel length & twist rate ?

    Sounds to me that you already know what you want. I have a Lapua and I'm thinking of doing an improved version myself once the barrel is gone on this one. I currently have a 32" Douglas 1-10" twist on my Lapua with a .900" dia at the muzzle. The break would be a good addition mine weighs in around 20#'s and still has allot of muzzle jump. I either need to move some weight to the front of the stock or put a break on it. Happy shooting!!
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      #6  
    Unread 07-27-2010, 07:53 AM
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    Join Date: Mar 2006
    Posts: 11
    Re: 338 Lapua improved barrel length & twist rate ?

    Quote:
    Originally Posted by aroshtr View Post
    My specs are close to the other suggestions. I am going with a 30" barrel 1.35" shank for 5" then tapers to .850. It will be fluted and have a brake.

    aroshtr
    I am looking for a barrel with the same specs but am having trouble finding one with a 1.350" shank. Which one are you using?? Also, do you have a tactical stock in mind?? Thanks.
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      #7  
    Unread 07-27-2010, 02:44 PM
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    Join Date: Oct 2007
    Posts: 165
    Re: 338 Lapua improved barrel length & twist rate ?

    I am using a Lilja Barrel. It is "Taper 31" from their special taper list.

    taper 31
    1.350" for 5.5" then st. taper to .850" at30"


    http://www.riflebarrels.com/products...taper_list.pdf
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