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300 Remington Ultra Mag

Discussion in 'Shooting Related Threads' started by BeerKing, Aug 23, 2013.

  1. BeerKing

    BeerKing Active Member

    Joined:
    Jan 29, 1998
    Messages:
    1,203
    Looking for any pet loads out there. thanks
     
  2. AveragEd

    AveragEd Well-Known Member

    Joined:
    Jan 29, 1998
    Messages:
    5,475
    Location:
    Mechanicsburg, Pennsylvania
    I haven't played around with mine very much - I bought it seven or eight years ago only because it is one of 150 stainless Remington Model 700s in brown laminated thumbhole stocks special-ordered by a Midwestern distributor for sale in Canada and I was able to buy one from a New York dealer. Being built as an export gun, it doesn't have all the "safe-sex" markings on the barrel or the J-Lock on the bolt shroud that our rifles had then.

    Here are the only six loads I tried; all were three-shot groups using 165-grain Nosler Ballistic Tips from a 26" barrel at 100 yards. The scope was a 4.5-14x 40mm AO Leupold VX3 set on 14.5x. The only modification to the rifle, aside from trigger adjustment, was removing the pressure tabs in the stock's forend.

    - 101.5 grains of Retumbo; 3,505fps; shot into 1.595" w/2 into 0.467"; SD 19

    - 102.5 grains of Retumbo; 3,542fps; shot into 1.392" w/2 into 0.161"; SD 10

    - 96.0 grains of RE25; 3,364fps; shot into 0.933" w/2 into 0.309"; SD 5

    - 97.0 grains of RE25; 3,398fps; shot into 0.897"; SD 13

    - 96.0 grains of H1000; 3,276fps; shot into 0.883"; SD 21

    - 97.0 grains of H1000; 3,311fps; shot into 0.775" w/2 into 0.369"; SD 30

    I don't know if the odd shot in some of the groups was my aiming error (highly possible given my eye problem) or simply flyers but accuracy was not hateful with most of those recipes. For the most part, the deviation numbers are pretty good so they all probably have potential. Worth noting is that all three powders shot better with the heavier charge.

    Ed
     
  3. BeerKing

    BeerKing Active Member

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    Jan 29, 1998
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    1,203
  4. RRA

    RRA TS Member

    Joined:
    Jan 29, 1998
    Messages:
    104
    Long Range: 89.5 Grains of Retumbo, CCI 250 Primers with Hornady Amax 208 grain bullets. 3035 fps. You could also switch to Berger 210 grain bullets. Just make certain to set the bullet into or near the lands. At 1000 yards 1800 foot pounds of knock down. Groups under an inch.