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Thread: IMR 7828 in 300 win mag experiment

  1. #1
    Member Float Pilot's Avatar
    Join Date
    Oct 2006
    Kachemak Bay Alaska

    Default IMR 7828 in 300 win mag experiment

    I tried 73.5 grains of IMR 7828 to push a 200 grain Sierra HPBT from my 300 Win Mag today. ( Fed 215M primer) WW Vrigin brass.
    It averaged 2,854 fps with a spread of around 15 fps. But the necks were dirty and it only gave me a 1.1 inch group at 100 yards. I may need to push it a tad faster to tighten up the groups. If this powder will work at all in this 26 inch barreled Remington M-700 tactical.
    Floatplane,Tailwheel and Firearms Instructor- Dragonfly Aero
    Experimental Hand-Loader, NRA Life Member

  2. #2
    Member alaska bush man's Avatar
    Join Date
    Apr 2006

    Thumbs up 300 Win

    RL22 or H4831 have served me well with the 300 Win


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