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Powder for 338 lapua?

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  #1  
Unread 03-24-2008, 11:16 PM
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Join Date: Jun 2007
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Powder for 338 lapua?

Hi to all, hope everyone had a good easter.

Can anyone tell me of a powder that will burn fast enough for a 338 lapua in a 25 inch barrel? I am currently using vithavori n170 but i dont think its burning it fast enough.
I am using 300g smk projectiles and the rate of twist of the barrel is 1-10.

Thank you
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  •   #2  
    Unread 03-24-2008, 11:42 PM
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    Join Date: Jan 2008
    Location: SF Bay Area
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    Quote:
    Originally Posted by sniperboy View Post
    Hi to all, hope everyone had a good easter.

    Can anyone tell me of a powder that will burn fast enough for a 338 lapua in a 25 inch barrel? I am currently using vithavori n170 but i dont think its burning it fast enough.
    I am using 300g smk projectiles and the rate of twist of the barrel is 1-10.

    Thank you
    Hey Sniperboy...
    I have tried US 869, Retumbo and Viht N-170. The Vihtavuori powder was my go to load and I got good consistency FPS @ 2675FPS ( low spreads etc)...I used 89 grains but I have a 28.5 inch barrel...Now I use Retumbo , 90 g and get about 2750...We switched to Retumbo because we were trying to simplify our loading procedure with fewer powders and using the same powder for different magnun rifles ( Lapua, 30-338, 300RUM ) and we did it! It makes things a lot easier...I think I remeber that Vihtavuori is a temperature "insensitive" powder like the extreme from Hodgdon. BTW Quickload says that with 90 grains N-170 in a 25 inch barrel there remains 1.84% of the powder unburned...IS that why you thought you needed a faster powder or were you meaning a slower powder? Shawn has had good luck using H1000, and has gotten a little less velocity but excellent consistency.good luck 30-338
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      #3  
    Unread 04-02-2008, 10:25 PM
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    power

    I use h1000 any time i am pushing a heavy bullet seems to work very well.
    good enouf to set a new record.
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    Always did like the fat ones Barrels that is !!
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      #4  
    Unread 04-03-2008, 05:02 PM
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    I have done load development for 2 different Lapuas. The custom job liked H 1000, the Armalite liked RL 25. We were using 250 SMK and Lapua 250 Senar(sp). Niether one liked to be pushed to fast. Groups tended to open up when I pushed them.
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      #5  
    Unread 04-04-2008, 06:09 PM
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    92.5gr/H1000 under a 250gr Lapua Scenar or 250gr Lapua LockBase out on my 26" PGWDTI Timberwolf.
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      #6  
    Unread 04-05-2008, 07:10 PM
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    Powder for .338 lapua

    I also use RL 25 in myarmalite AR-30...
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    Steve in New Mexico
    Hunting with my AR30 .338 Lapua
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      #7  
    Unread 08-31-2010, 08:21 PM
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    Re: Powder for 338 lapua?

    Guys,

    I just got a 338 Lapua also. Thanks for the info. I'm going to create a load for elk first with the Sierra 250grn BTSP, then move to the 300 grn SMKs. It sound like H-1000 is the one.

    J
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