300wby Berger load info

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by coyotelite, Feb 4, 2014.

  1. coyotelite

    coyotelite Well-Known Member

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    Looking for a good starting point and powder recommendation for 210gr vld hunting in my 300wby.
     
  2. Jud96

    Jud96 Well-Known Member

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    Try 80grs IMR 7828
     

  3. coyotelite

    coyotelite Well-Known Member

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    What's the max load with that powder so I know where to stop in testing different charges.
     
  4. Jud96

    Jud96 Well-Known Member

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    After I checked several more sources, it seems 80grs is a tad over max. Your max should be around 78grs. One of my Lee manuals listed something a little over 80gr but everything else lists 78grs as max for this bullet weight. I've noticed some loads on the internet are a little over max also.
     
  5. coyotelite

    coyotelite Well-Known Member

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    Anybody have any experience with this bullet/caliber combo?
     
  6. TH

    TH Well-Known Member

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    I shot 75 grains of r25 with good success
     
  7. kcebcj

    kcebcj Well-Known Member

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    The Berger Reloading Manual only list 7828 SSC for the 300 Weatherby Mag and the 210gr Berger with a starting load of 71.5gr and a max of 75.2. Ran this in Quick Load and 77gr's would be really pushing it.

    7828 reads the same as 7828 SSC in Quick Load. All rifles and the variables are different. If I were you I would start at 71.5gr with the bullet seated where you wanted it and while shooting through a chronograph work up paying attention.

    I would also give H1000 a try. Start 76.5
     
  8. coyotelite

    coyotelite Well-Known Member

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    What's the max load with that h1000? When shooting through a chrono what am I looking for? Tight speed tolerances?
     
  9. coyotelite

    coyotelite Well-Known Member

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    Does the Berger manual list the most accurate powder tested? What does it list as the average speed under max load?
     
  10. kcebcj

    kcebcj Well-Known Member

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    The Berger Manual shows the max load of IMR 7828 SSC at 75.2 with a velocity of 2897fps for the Weatherby 300 and the Berger 210gr. The Berger Manual does not show the most accurate load. The most accurate load in a manual is ill relevant. Every rifle is different. You need to find the most accurate load for your rifle.

    Berger shows the max load for the 300Weatherby and the 210gr Berger using H1000 at 80.5gr with a velocity of 2893fps. Never start out with a max load!!

    I shoot through a chrono when first starting a new load just to watch the velocity as I look for the rifles max load with the combination I'm using checking for pressure signs and paying attention as I get near the book max. The chronos velocity is just a guide and the actual true velocity will arrive when you prove the load. There are some chronos on the market now that are very accurate and worth the money if you enjoy reloading .
     
  11. coyotelite

    coyotelite Well-Known Member

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    One more question. Since acquiring powder is so tough, how do I decide which powder to use?
     
  12. JQH

    JQH Member

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    Two powders that have been listed would be good ones to try. I have used 7828 with 180 gr nozzler in my 300 WBY. Killed a deer at 880 yds this past season. Waiting in shipment of Berger 210 Hybrid target bullets. From what I have read on here the VLD bullets have set to Jam to shoot accurately. At this bullet length they won't fit in the magazine. The hybrid target bullets were designed to shoot accurately with jump. Allowing to seat the bullet deeper.
     
    Last edited: Feb 8, 2014
  13. coyotelite

    coyotelite Well-Known Member

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    A local smith recommended measuring the mag and Dropping .0015 for the OAL. Think I'm going to try the H1000 first.
     
  14. coyotelite

    coyotelite Well-Known Member

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    If 80.5 is max I'll probably start at 78 and load 3 rounds of each increasing by .5gr per group up to 80. Then shoot each group with good time to cool between groups and see which one shoots best at 200. If I can get MOA out of this factory rifle I'll be happy enough to put some money into a stock and better scope to get it a bit tighter for extended range shooting.