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338 Lapua/338 Lapua Improved/338 Lapua Ackley Improved

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  #1  
Unread 11-26-2011, 01:16 AM
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338 Lapua/338 Lapua Improved/338 Lapua Ackley Improved

What are the major differences? From what I have read, the Ackley is the way to go? I understand the shoulder is a big factor. Anyone have a picture of the three side by side?

Thanks
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Last edited by C.O. Shooter; 11-27-2011 at 01:55 AM.
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  •   #2  
    Unread 11-26-2011, 11:16 AM
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    Re: 338 Laupa/338 Laupa Improved/338 Laupa Ackley Improved

    The Lapua Improved and AI are two in the same. It will just vary as too which shoulder angle the gunsmith doing the barrel has a reamer for. The plain Lapua will do the job too. It will be about 75-100fps slower.

    Tank
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    Unread 11-26-2011, 12:47 PM
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    Re: 338 Laupa/338 Laupa Improved/338 Laupa Ackley Improved

    Most guys are getting about EDGE velocities with the 338 Lapua--right around 2800fps-2850fps with the 300 grainers out there and a 30" barrel, give or take. Most guys with the Lap Imps are getting around 2950. I get an average MV of 2976fps with the 300g Berger and 101g Rebumbo and a 29" Rock Creek barrel. Just have to decide what you want.

    Added a pic:



    L-R: 338 Lap case, 338 AX (Kirby Allen's Lap Imp. w/ 300SMK), 300RUM w/ 240SMK, 265g .338 ULD RBBT AT Wildcat bullet, 225 AB, 240 SMK.
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    Last edited by jmden; 11-26-2011 at 08:46 PM. Reason: punctuation
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    Unread 11-29-2011, 02:20 PM
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    Re: 338 Lapua/338 Lapua Improved/338 Lapua Ackley Improved

    Looking for opinions on creating a 338 Lapua/338 Lapua Improved/338 Lapua Ackley Improved on a WBY MKV Action? Thoughts, ideas, comments, concerns are welcome! More than likely would be using a 300 grain bullet and a 30" pipe! Thanks!
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    Unread 11-29-2011, 04:04 PM
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    Re: 338 Lapua/338 Lapua Improved/338 Lapua Ackley Improved

    Quote:
    Originally Posted by C.O. Shooter View Post
    Looking for opinions on creating a 338 Lapua/338 Lapua Improved/338 Lapua Ackley Improved on a WBY MKV Action? Thoughts, ideas, comments, concerns are welcome! More than likely would be using a 300 grain bullet and a 30" pipe! Thanks!
    I'm considering this also, I have a .338-.378 now and I'll rebarrel it and from what I've found the benefits would be better quality brass than the Weatherby at a cheaper price and similar performance. The down sides would be that you have to fire form your own brass, find a smith with the reamer and come up with the dies for the Lapua Improved.

    Gus
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    Unread 11-29-2011, 04:15 PM
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    Re: 338 Lapua/338 Lapua Improved/338 Lapua Ackley Improved

    See: Home Page

    Kirby Allen's website. 'Fiftydriver' here.

    He'll fireform cases for you, chamber and provide dies for the 338AX pictured above. It's got around a 35 deg shoulder.

    I'm sure there's other folks that will do all that, but Kirby's the only one I know of. He's contributed enormously over the years to this site, personally helping many of us understand what's what.
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    Unread 11-29-2011, 05:04 PM
    B23 B23 is offline
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    Re: 338 Lapua/338 Lapua Improved/338 Lapua Ackley Improved

    I always think of Kirby's program as 1 stop shopping.
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