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7mm STW & 180 gr Bergers

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  #1  
Unread 12-18-2008, 12:24 AM
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Join Date: Dec 2006
Posts: 35
7mm STW & 180 gr Bergers

I am just finishing my STW build and am planning on shooting the 180 gr Bergers. Is anyone else using this combo? I am having a hard time finding much load info for it.

Thanks
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  •   #2  
    Unread 12-18-2008, 04:31 PM
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    Join Date: Mar 2003
    Location: Grand Junction, Colorado
    Posts: 239
    Re: 7mm STW & 180 gr Bergers

    Murray, in my 7mmSTW, I'm using 76.5gr of RL-22 shooting the 180gr Bergers. Velocity ranges from 3180-3200 depending on temperature out of a 27.5" PacNor barrel. This is a pretty hot load in my gun, so work up to it. I'm also backed off the lands quite a bit as I have a fair amount of freebore in my chamber. Seems most people have the best luck close to, or even jammed in the lands. Guess I got lucky because mine will shoot in the .2's and .3's set up the way I described.

    This is the only powder I've tried so far being as I didn't have much time to work up a load before hunting season. I have a buddy thats convinced me to give Retumbo a try, he says I'll get even more velocity with this powder. I'm guessing I have a pretty fast barrel as most people don't seem to be getting the velocity I am with the 180's.

    Not to steal this thread, but I'd be interested in hearing from others, as to which is producing more velocity between RL-22 and Retumbo.

    Hope this helps.

    Last edited by slymule; 12-18-2008 at 04:35 PM.
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      #3  
    Unread 12-19-2008, 10:44 AM
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    Join Date: Jan 2008
    Location: Upstate SC
    Posts: 28
    Re: 7mm STW & 180 gr Bergers

    Slymule,
    What twist barrel are you using?
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      #4  
    Unread 12-19-2008, 11:16 AM
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    Join Date: Jun 2004
    Location: Mississippi
    Posts: 37
    Re: 7mm STW & 180 gr Bergers

    Go to the Berger website and ask for load data. Berger is real good about responding quick. Great folks to do business with. I bought some 180 Bergers for my Win 70 Classic Sporter in STW. I can seat 160 Sierras to 3.61 and they shoot fine. For the life of me, I can not get the 180s to shoot. My rifle has a lonnng throat. Seated to just touch the rifling, rounds measure over 3.8. Seated to what Berger recommeds for hunting, I think about 3.7, the rounds will not feed through the magazine. Even loaded single shot style at max length into the lands, the loads will not shoot in my gun. I think my gun has either a 9.25 or 9.5 twist. I would like any help also. 180 Bergers look like a long legged sexy blonde and I want to use them if I can get them to shoot
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      #5  
    Unread 12-19-2008, 11:45 AM
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    Join Date: Oct 2007
    Location: Flat Rock, Michigan, USA
    Posts: 178
    Re: 7mm STW & 180 gr Bergers

    Chuck Boyer;

    Have you tried partial neck resizing? I will use this method with factory barrels, as it helps to align the cartridge/ bullet with the chamber/ bore, which usually improves accuracy. Perhaps you can even jump to the lands.

    longshooter
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      #6  
    Unread 12-19-2008, 01:24 PM
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    Join Date: Mar 2003
    Location: Grand Junction, Colorado
    Posts: 239
    Re: 7mm STW & 180 gr Bergers

    Slymule,
    What twist barrel are you using?

    Terrier72, I have a 1 in 8 twist barrel.
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      #7  
    Unread 12-19-2008, 03:00 PM
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    Join Date: Dec 2006
    Posts: 35
    Re: 7mm STW & 180 gr Bergers

    Thanks for the help guys, I have e-mailed Berger and they gave me some pretty basic Quickload data.

    Slymule, Let me know how the Retumbo shoots for you. I am hoping to use it or H-1000 for temp stability reasons.
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