300 Win Mag and 210 Match King ???

Discussion in 'Reloading' started by bigbuck, Nov 13, 2012.

  1. bigbuck

    bigbuck Well-Known Member

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    Have you ever loaded the 210 in your 300 winmag ?
    I loaded some tonight and started at 72.5 grains of H-1000 the Berger and Sierra COAL called for 3.334 . When I tried to adjust my seater die to this measurment I could feel the bullet crunch the powder.

    What should I expect? Thanks for a.ny help
     
  2. dragman

    dragman Well-Known Member

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    this probably wont help but one of my favorite long range deer loads is 210 grain bergers in my 300WSM. still get decent speed and the power is amazing
     

  3. jsthntn247

    jsthntn247 Well-Known Member

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    There's a ton of info on this. You are on the low side at 72.5. Most folks are in the 76-77.5 grain range. Why are you stuck on that COL. Measure the distance to your lands ands seat .015 off.
     
  4. bigbuck

    bigbuck Well-Known Member

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    Thats what the email said from Berger and thats the COL from an old sierra manual. Thanks
     
  5. jsthntn247

    jsthntn247 Well-Known Member

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    If you seat them out a little more, you want be compressing the powder. I seat mine at 3.360. It will be harder, most of the time, to get a good load if you jump that far. The book says that for lawyer reasons and is meant to be a starting place.