416 BUFF revisited

Discussion in 'Reloading' started by J E Custom, Jun 9, 2007.

  1. J E Custom

    J E Custom Well-Known Member

    Messages:
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    Joined:
    Jul 29, 2004
    Well I finaly got some testing done and so far I am
    very happy it looks like this beast will shoot.

    Recoil is around 65ftlbs with 400gr bullets and 60
    ftlbs with 350 gr bullets so 40 or 50 rounds of
    testing is enough at one time.

    Also after 3 shots the barrel starts heating up (the
    reason for 3 shot groups instead of 5).

    All loads are below max for ease of extraction.

    Have tried to post pictures pictures of groups
    but could'nt so will wing it.

    All groups are 3 shot @ 100yrds.

    "Worst" group so far has been .558 using
    a 400gr Barnes x
    MV=2587 ftpsec and a SD of 9
    With 101gr of H4831sc & a rem 91/2 mag primer

    350 grain barnes triple shock load produced
    a .480 group @ 2711 ft per sec
    SD=11 using 103grs of H4831sc

    But saving the best for last !!
    The 400gr barnes triple shock
    with 102grs H4831sc shot a .031
    group at 2594ftsec MV
    And the SD was 6(The best group I have
    ever fired)

    I was very impressed and so was two other shooters
    that witnessed it so I took 4 readings to be sure
    The readings were .440 , .445 , .447 & .444 so I
    used the .447 just to be safe (.447-.416= .031

    Had to be some luck involved but so what I was even thrilled
    with the .558 group.

    Next test will be with H1000
    will post results and pictures of these
    targets if posible.

    P.S Original posting is under HANDLOADING
    under 416 BUFF page 21 or 22.

    Sorry about the pictures photobucket is down.

    J E CUSTOM
     
    Last edited: Aug 8, 2008
  2. eddybo

    eddybo Well-Known Member

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    Jan 5, 2007
    .031 is a hell of a group from any gun much less one that kicks like a small intercontinental ballistic missle. Good shooting.
     

  3. J E Custom

    J E Custom Well-Known Member

    Messages:
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    [ QUOTE ]
    .031 is a hell of a group from any gun much less one that kicks like a small intercontinental ballistic missle. Good shooting.

    [/ QUOTE ]

    Thanks Eddybo

    It was probably just luck but I will repeat the test
    to see.

    If I can find the right powder and get 100% case density
    it should bump velocity a little. But I'm happy with the
    velocity now .

    loading is straight forward and brass is not to expensive
    (.57 cents a piece.

    I hope this answers some of the questions that
    Victor,Pop & Dgr 416 asked.

    Thanks again.
    J E CUSTOM
     
  4. royinidaho

    royinidaho Writers Guild

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    Me think's I'd stop load development right there and go find a Buff to put in the freezer. /ubbthreads/images/graemlins/wink.gif

    Good goin' all the way around!
     
  5. Supermag

    Supermag Well-Known Member

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    Sep 7, 2006
    I'm sure I just missed it but what is the parent cartridge and/or dimensions.
     
  6. J E Custom

    J E Custom Well-Known Member

    Messages:
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    Thanks Roy
    and Supermag It,s based on a 375 RUM case.

    Look on page 21 or 22 (Handloading) for more details.

    Manson has permision to sell the reamer and hornady
    has the dies if your interested.

    Thank,s /ubbthreads/images/graemlins/smile.gif /ubbthreads/images/graemlins/smile.gif
    J E CUSTOM