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Thread: 7mm/300 weatherby mag.

  1. #1

    Question 7mm/300 weatherby mag.

    Anyone have any experience with this wildcat if so how do you like it and what powders and bullets do you like? Thanks Ronnie

  2. #2


    I don't know the details but a friend in the midwest had one built, then rechambered it to 7mm STW when that cartridge came along. He's a serious long range game shooter and really happy with the STW, but I simply don't recall why he gave up on the 7mm/300 chambering.

    1000-yard match shooters messed with 7mm wildcats for a long time, but I've lost track of that crowd. A great bunch that can teach you what precision long range shooting is all about, but I don't know if they've picked up on the STW or if they're still using wildcats.

    Anyone else?

  3. #3

    Default 7mm/300 Wby

    Have Had At Least One Of This Chambering For Over 20 Years. I Shoot The Identical Load In It As The 7mm Stw. Since The 7mm Stw Is A Factory Load I Have Gone To Chambering For These. Very Impressive With 27", 12" Twist Barrels. My Load Is Warm At 81.5 Grains Of Rl-22 With 140gr Accubonds Or Balistic Tips.

  4. #4

    Default 7mm/300

    Thanks for the help gentlemen...Ronnie

  5. #5
    Join Date
    Apr 2006


    I had one built on a Remmie 700. I rechambered 7mm mag to it. Dang rifle was amazing. Load was 7828 and 175 partition.
    I remember sighting it in 3 inches high at 100 yards and firing 3 shots. Then I moved the target back to 200 and fired three more. Finally I set it up at 300 and fired the last 3.
    All 9 fit into a 5 inch circle!
    One of the few rifles I ever regretted selling.
    In todays time I would start with 175 grain XXX and RL 25 and see what develops.


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