300 Weatherby Mag load question

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Len Backus, Dec 29, 2009.

  1. Len Backus

    Len Backus Administrator Staff Member

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    A friend of mine is wondering what he can expect in velocity with a 180 grain bullet and a 26 inch barrel.

    And can you recommend a load?
     
  2. jimbires

    jimbires Well-Known Member

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    Len , my 300 is a 24" bbl.

    I'm using 180 accubonds , 87.8 grains H1000 , 215 primer , remington brass . ave fps is 3165


    I'm going to play a little more with IMR7828 . 180 accubond , 82.5 grains IMR7828 , 215 primer , rem brass . ave fps 3150
     

  3. 340Shooter

    340Shooter Well-Known Member

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    180gr Hornady SP
    85grs RL22
    Wby case
    Fed#215
    COL 3.560"
    3233fps

    Rifle was a Mk V Lazermark 26" barrel
     
  4. Long Time Long Ranger

    Long Time Long Ranger Well-Known Member

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    When I first start loading with a 300 wby I load 82 grains of H4831, cci250 primer and seat the 180 just short enough so it will feed through the mk 5 action. This is a generic accuracy load good in any 300 wby with freebore. I always try this first to see if it is a shooter. I have never seen a mk 5 that did not shoot this load well. Velocity is right at 3200 fps in a 26" barrel. Some newer powders will get more velocity. But this is a shooter to try in any 300 wby.
     
  5. getsmart

    getsmart Well-Known Member

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    I shoot 210SMK out of my .300 Weatherby.

    27-inch barrel 3-groove. I get 2975fps average with 80.5grains of H1000. Fed215 primers. It will go faster, but this load has the best extreme spread. FWIW.

    eric
     
  6. Chas1

    Chas1 Well-Known Member

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    240smk, 26" tube, fed215 primers, H1000 80.2 @ 2710 fps.
     
  7. Broz

    Broz Well-Known Member

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    Len, I worked quite a bit with my 300 Wby. This is no High Velocity load but it worked great to 550 with a BC reticle.

    Mark V 26" accumark Barrel

    Wby case

    Fed 215 GM primer

    79 gr of H-4831

    190 Berger VLD seated just .020" shorter than the mag box so it will pass through freely.

    Velocity was 3050 and was a pretty consistant 1/2 moa rifle to 550 yards.

    Jeff