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Cartridge design help please

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  #1  
Unread 11-17-2013, 11:05 AM
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Join Date: Nov 2010
Location: Ashflat, AR
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Cartridge design help please

I want to build a rifle to drive the Matrix 165gr .277 bullets 3100-3200fps. I cant decide what brass to put behind this bullet to get the results I want. I am open to having a reamer made. I would like to use some combination of dies that are already out there like I do with my 7/300win using a redding s type bushing die. I would be open to having dies made or modified if I had to though.
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Weatherby Vanguard 7mmx300win (28 nosler reaming coming)
Weatherby Vanguard 270x300win in the works
Savage LRH 6.5x284
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  •   #2  
    Unread 11-17-2013, 12:39 PM
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    Re: Cartridge design help please

    Why not a 270 RUM. 338 rum brass and redding dies with a different neck bushing. I guess the down side might be barrel life. 270/375 ruger would be another good one, dies would be more of a problem though.
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      #3  
    Unread 11-17-2013, 01:06 PM
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    Join Date: Sep 2013
    Location: Wasatch Front, Utah
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    Re: Cartridge design help please

    I have been wondering if Rich Sherman's new 6.5 ss case design could get close to those numbers in a short action... would be nice to have a true short action .270 round that could push the 165 close to 3200...
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      #4  
    Unread 11-17-2013, 01:14 PM
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    Re: Cartridge design help please

    I looked at the 338 rum case but I feel like it is a bit large. Now the ruger case I have been looking into more I keep trying to find the thread about necking it down to 7mm for the 7mmLRM but cant seem to find it now. Seems like it would likely do what I am wanting if I can neck it down easy enough.

    It will be built on either a weatherby vanguard/howa or a savage either will be long action.
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    Weatherby Vanguard 7mmx300win (28 nosler reaming coming)
    Weatherby Vanguard 270x300win in the works
    Savage LRH 6.5x284
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      #5  
    Unread 11-17-2013, 01:40 PM
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    Re: Cartridge design help please

    I think taking the 7 LRM and necking it down would put you easily into your performance window and it should be easy to make cases.
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      #6  
    Unread 11-17-2013, 01:52 PM
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    Re: Cartridge design help please

    I thought that was the better choice too, but what about the reloading dies?
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      #7  
    Unread 11-17-2013, 02:20 PM
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    Re: Cartridge design help please

    A 270 Weatherby out to just get you there. A little longer barrel would ensure it.
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