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New wildcat design

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  #1  
Unread 04-04-2011, 08:42 PM
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New wildcat design

Hi guys....Most of you have probably seen the posts on my 6.5 and 300 Sherman cartridges. I have recently made a change which should be the absolute MOST case capacity in an '06 sized case and still maintained a good neck. I did this by using the 6.5x65 RWS case and moving the shoulder forward another .025" over my current case, based on the .270 parent. Not only will the larger volume boost the velocity a little but the RWS case can be loaded to higher pressures than domestic cases. I have read articles where they have been pressure tested at 70,000 PSI with no failure. I am having my current 300 rechambered to the new "MAX" case and hopefully my 6.5 soon to follow. This will be a simple fix by just running the current reamer in .025" further. Another plus will be cleaning up the throats a bit from the 1000 rounds fired through the old chamber. The only added cost will be a new go gauge a $27. My gunsmith said he could do the chambering in my B-78 for $50. My old hydro form die will work as will my sizing dies. I will keep you posted on performance........Rich
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  •   #2  
    Unread 04-05-2011, 12:08 AM
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    Re: New wildcat design

    Cool Rich... Will be watching for updates. I'm loading your 210's up tonight and hope to do work up tomorrow or the next day. Then accuracy and site in later in the week, then drops at the Townsend Shoot Saturday
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      #3  
    Unread 04-05-2011, 01:43 AM
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    Re: New wildcat design

    damn it Rich ,need any help spending your money? Sounds cool as always how are the 260s going? Someone was testing a few i think but can't remember. just changed my signature , thoughts?
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    Last edited by 300ECHO; 04-05-2011 at 01:50 AM. Reason: signature
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      #4  
    Unread 04-05-2011, 09:25 AM
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    Re: New wildcat design

    Geewizz Rich,

    You're into more stuff than I am.

    So 6.5x65 is '06? Good find. I'd never have figured that one out.

    I'd do about anything to move from Win/Rem brass to RWS.

    Maybe run your chamber specs on a 270 Win w/a 0.6++ bc bullet in 160 class would turn the old Winny into a true 1k rig.

    Hmmmmmmm..........

    Good goin.!
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      #5  
    Unread 04-05-2011, 09:53 AM
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    Re: New wildcat design

    I have never used a better case than RWS.

    Many years ago shooting a 30 Gibbs I really got tired of fire forming cases after 3 shots using our throw away case made in this country. Someone turned me onto the 7X65 R RWS case. I now use the 5.6 X 57,7X57 280 Rem,6.5X65 which is .005 larger in diameter than the Rimmed 7 X 65., 06 and 9.3 X 74R brass.

    I have never lost an RWS case and I was driving them to short Mag pressures and velocities well before the short Mag craze.



    The case on the left is a 6 Rem case. The next 3 going right are formed 224 minicoop cases with 30 degree shoulder. The case all the way to the right is a 338 Gibbs with 35 degree shoulder.
    One can not go wrong with RWS case's.
    Neal

    Last edited by hammertyme; 04-05-2011 at 10:05 AM.
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      #6  
    Unread 04-05-2011, 11:12 AM
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    Re: New wildcat design

    Quote:
    Originally Posted by MontanaRifleman View Post
    Cool Rich... Will be watching for updates. I'm loading your 210's up tonight and hope to do work up tomorrow or the next day. Then accuracy and site in later in the week, then drops at the Townsend Shoot Saturday
    ALLRIGHT! I'll be anxious to hear the results........Rich
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      #7  
    Unread 04-05-2011, 11:14 AM
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    Re: New wildcat design

    Quote:
    Originally Posted by 300ECHO View Post
    damn it Rich ,need any help spending your money? Sounds cool as always how are the 260s going? Someone was testing a few i think but can't remember. just changed my signature , thoughts?
    Ya, Jon over in Seattle area is going to test some as soon as he gets time. Keep your fingers crossed
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