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perplexing problem with berger 300's

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  #1  
Unread 09-06-2010, 03:26 PM
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Location: Foley, MN
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perplexing problem with berger 300's

I cant get to shoot under an inch. Ive been shooting today with all differant lengths and differant charges od Rl25 and Retumbo. Some groups string left to right( no wind only 100yds) some douple 2 here 3 there or one there and 2 over there some scattered all over. Barrel is a Broughton 30'' with a brake. Also full length sized brass and fed large mag primers.
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  •   #2  
    Unread 09-06-2010, 05:14 PM
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    Re: perplexing problem with berger 300's

    Quote:
    Originally Posted by wildchild View Post
    I cant get to shoot under an inch. Ive been shooting today with all differant lengths and differant charges od Rl25 and Retumbo. Some groups string left to right( no wind only 100yds) some douple 2 here 3 there or one there and 2 over there some scattered all over. Barrel is a Broughton 30'' with a brake. Also full length sized brass and fed large mag primers.

    What chambering? MV? Twist rate?
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    Unread 09-06-2010, 05:21 PM
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    Re: perplexing problem with berger 300's

    Do you touch the land and in land seating.? Berger love to be seated in land.
    How about different primer? CCI...
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      #4  
    Unread 09-06-2010, 07:36 PM
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    Re: perplexing problem with berger 300's

    You are probably experiencing the nose slumping issues some people were seeing with the 300 berger. It's a bummer but they probably won't shoot in your rifle.

    Stu.
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      #5  
    Unread 09-06-2010, 09:52 PM
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    Re: perplexing problem with berger 300's

    there may be hope threw 85 grns of rl 22 in and all were touchung in a round cluster. See what 2marow with some more the same. ???
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      #6  
    Unread 09-06-2010, 11:19 PM
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    Re: perplexing problem with berger 300's

    Hmmmm, sounds like you may be shooting a RUM? RL-22 may be a bit fast for that bullet and cartridge???

    The way I got mine to shoot exceptionally well is to seat the bullet shallow and and have to slam the bolt closed hard to get the bullet backed into the case enough for the bolt to close.

    I honed the neck of the sizing die and don't use the plug to expand the neck after sizing half the neck. Its pretty weird but its the way she shoots the best. And it is good!

    There is enough neck tension to extract a loaded round from the chamber but not from the rifle without releasing the bolt.

    Just some experience to add to the pile.
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      #7  
    Unread 09-06-2010, 11:52 PM
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    Re: perplexing problem with berger 300's

    Sounds like they are not designed for the .338 RUM or .338 Lapua.

    Berger Bulletin Update Regarding the .338 Hybrids
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