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Looking for info on 30-378 WBY Imp 50 degree shoulder.

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  #1  
Unread 01-25-2011, 09:07 PM
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Join Date: Dec 2009
Posts: 5
Looking for info on 30-378 WBY Imp 50 degree shoulder.

Does anyone here fire this round ? I'm considering rebarreling my Accumark. Any info would be helpfull. Forming the case, velocities, is it worth it over the factory round. Help me decide.

Last edited by osok666; 01-25-2011 at 09:15 PM.
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  •   #2  
    Unread 01-26-2011, 04:10 PM
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    Join Date: Sep 2004
    Location: Nevada
    Posts: 797
    Re: Looking for info on 30-378 WBY Imp 50 degree shoulder.

    Quote:
    Originally Posted by osok666 View Post
    Does anyone here fire this round ? I'm considering rebarreling my Accumark. Any info would be helpfull. Forming the case, velocities, is it worth it over the factory round. Help me decide.
    I went through two barrels on my 30-378 and it was ready for a third when i sold it. But anyway I ask this question today to older long time gunsmith and wildcat shooter. He said just what I said: "WHY?" The venturie shoulder might cause more brass flow in the neck and shoulder. I don't think I ever had to trim the case, they had other problems and I just threw them away.

    I only really shot 210 SPBT 220 spbt and 240 match king.

    As for velocity. to begin with you only have a 400 shot barrel at best. I only did enough chrono time to get scope doping and ballistic tables figured out with relatively case friendly near max loads.

    I had a 28 inch barrel + two inch brake. If you wanted more speed try a longer barrel.

    I really considered changing it to a 338-378 optimized for 275 - 300 grain pills and then you would really have a weapon.
    __________________
    .270 Ackley improved 29 inch 1.250 dia. target barrel 7mm STW 28 inch 1.250 target barrel. I also love my .458 mag for varmints and the biggest game in the world.

    Last edited by budlight; 01-28-2011 at 08:21 AM.
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      #3  
    Unread 01-28-2011, 06:51 AM
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    Join Date: Feb 2010
    Location: Utah
    Posts: 32
    Re: Looking for info on 30-378 WBY Imp 50 degree shoulder.

    400 shots on your 30-378?

    My accumark was nearing 1000 shots when I worked up this load




    That said, its getting a 33 barrel soon.
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