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Is the .300 WSM temperamental?

Discussion in 'Rifle Country' started by SRMohawk, Sep 28, 2006.

  1. SRMohawk

    SRMohawk Member

    Feb 12, 2006
    Clearly, many of us have .300 WSM rifles and, clearly, many of us love them for how remarkably potent and accurate they can be. But do any of you find your .300 WSMs to be especially temperamental or fickle in terms of how well they'll shoot going from warm to cold temperatures and from low to high altitudes?

    I've never left the greater Houston area with my own .300 WSM rifle since it's just a single-shot target rifle really and weighs to much to hump out on a hunt. But from summer to winter it has seemed to require radically different load recipes in order to satisfy my accuracy demands of it.

    I know that pretty much all cartridges tend to shoot a given load best under a pretty narrow range of climatic conditions, but it seems to be much more the case with the .300 WSM. My riflesmith isn't surprised by this, however, as he insists that the subject cartridge is so much a massive benchrest cartridge that is should be expected to behave like other benchrest cartridges. And benchrest cartridges (6BR, 6 PPC, .22 PPC, etc.), he insists, are notorious for this kind of thing.

    So what about all this, boys?
  2. dakotasin

    dakotasin Senior Member

    Dec 26, 2002
    i don't find mine to be unreasonably temperamental.
  3. hoghunting

    hoghunting Participating Member

    Feb 16, 2006
    I used 11 different powders working up loads for my 300 WSM. I found I get the most consistancy and least temperature fluctuations using Reloder 19 - in MY rifle. My groups open up slightly when the ambient temperature is 90 degrees or above, but stay very consistant to temps down to -10. I haven't tried them at lower temps.

    I have not had any cartridge stay "perfect" in temperature ranges of -10 to 100 degrees. They will all fluctuate.

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