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7MM RUM , 162 Hornady's & Retumbo

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  #1  
Unread 06-25-2003, 09:30 PM
 
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7MM RUM , 162 Hornady\'s & Retumbo

I would like some advice from S1 and anyone else who might have some experience with the 7MM RUM. I would like to try out some 162gr Hornady bullets with Retumbo but I'm unsure of a starting load. The bottle says 94grs for a 160 Nosler Partition. Would 90 grs be a safe place to start with the Hornady's or should I start lower. I have many years of experience reloading but without clear data on a cartridge I'm not experienced with I would appreciate any and all advice. I have not been able to find hardly any loading data on this cartridge.
Thank you all in advance for your help.
Wayne
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  •   #2  
    Unread 06-26-2003, 08:03 AM
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    Join Date: Sep 2002
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    Re: 7MM RUM , 162 Hornady\'s & Retumbo

    Call Sierra,..they will e-mail you their newest data. I find that talking to the guys there, puts you ahead of the game.

    Retumbo is a funny powder,..a few of the members here have not gotten even close to max loads before pressure signs were apparant. I have loaded some for the 300RUM, but I went wayyy below max as a starting point and figure safe is always better. I'll work up from there.
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      #3  
    Unread 06-26-2003, 05:25 PM
     
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    Re: 7MM RUM , 162 Hornady\'s & Retumbo

    Howdy Wayne....90 grains is plenty safe to start with the 162 A-Max and Fed 210 primers.

    Do not be suprised if the rifle tunes up between 92.0 and 93.5 grains with the bullet named above using reasonable light neck tension. [img]images/icons/wink.gif[/img]
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      #4  
    Unread 06-26-2003, 07:08 PM
     
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    Re: 7MM RUM , 162 Hornady\'s & Retumbo

    Thanks for the replies.
    Just C, I did email Sierra and they didn't have any data yet for the 7MM RUM. Dave said that they got a Savage in 7MM RUM to do some testing with and there was a problem with it so they sent it back and haven't received another yet.
    S1, are you recommending I use a standard primer instead of a magnum?
    Thanks again guys for your replies.
    Wayne
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      #5  
    Unread 06-26-2003, 07:31 PM
     
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    Re: 7MM RUM , 162 Hornady\'s & Retumbo

    I would always choose the Fed 210 over the 215 as long as the temperature is above 15 degrees fh.
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      #6  
    Unread 06-26-2003, 09:14 PM
     
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    Re: 7MM RUM , 162 Hornady\'s & Retumbo

    Thanks S1, I will give the 210's a try.
    Wayne
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      #7  
    Unread 06-30-2003, 10:18 AM
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    Join Date: Sep 2002
    Location: Illinois
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    Re: 7MM RUM , 162 Hornady\'s & Retumbo

    Just for information, I had to go to a F-215 primer when using RL-22 and a 150gr. NBT due to case not sealing allowing so much blow-by that it was denting the case below the shoulder. This is in a new Sendero in 7 RUM.

    db
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