375 RUM Build

Discussion in 'Long Range Hunting & Shooting' started by Whitetail312, Jun 24, 2019.


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  1. Whitetail312

    Whitetail312 Well-Known Member

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    What 300 grain bullet do you use?
     
  2. Moki

    Moki Well-Known Member

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    Several = Gamekings - Partitions - A-Frames I shot my B&C 24 3/16" interior BC, Canada grizzly with a 300gr Partition @ 2800fps.

    I also shoot 350gr Woodlieghs and North Fork
     
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  3. Doublezranch

    Doublezranch Well-Known Member

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    The partition bullets are hard to beat when it comes to hunting. They have aways been accurate and done a excellent job harvesting game.
     
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  4. Whitetail312

    Whitetail312 Well-Known Member

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    Are you running an internal or detachable box mag system?
     
  5. Moki

    Moki Well-Known Member

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    Stock factory hinged floor plate.
     
  6. jw375

    jw375 New Member

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    I had Shawn at Defensive Edge build a 375 RUM +P with a 27” #7 Benchmark Barrel a few years back.

    Rem 700 action Wyatt’s center feed box w/ Remington floor plate . I can seat 350gr SMK’s .005” off, OAL 4.1” and fit in the magazine.

    The 329gr Hammer Hunter it what I’m playing with now. Perfect for the 375RUM especially with the +P chambering. First load I tried was sub moa.

    96gr RL 26 329gr Hammer 2790fps
    This is just coasting. Not even close to pressure. Lot of case capacity still even with the longer all copper bullet. 9F1244A2-E9CC-494C-BBB5-47E5CF6F4ECA.jpeg 547325CC-B81E-4EDF-B3A6-BF53C0FCB035.jpeg B67D8128-FF1F-4814-A442-47D2412D2F43.jpeg 57724A9C-B167-49E6-BFB1-1CC20CF12E08.jpeg I have no doubt I could run these Hammer’s to beyond 2850fps before seeing high pressure signs. Haven’t had a chance to shoot them beyond 300 yards, but they seem to be every bit as accurate at the 350 SMK. I’m thinking a heavy dose of H1000, Retumbo or N570 behind these Hammers with produce some amazing #’s. I’ll be trying soon!
     
  7. Whitetail312

    Whitetail312 Well-Known Member

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    This was the answer I was looking for, if you don’t mind could you send me the link to the magazine you used to make a 4.100 fit?
     
  8. jw375

    jw375 New Member

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    375 RUM +P built by Defensive Edge

    - Remington 700LA LH customizations by DE to fit 4” coal
    - 27” Benchmark #7 Fluted 1:10
    - DE muzzle break
    - Wyatt’s Box CFE-09. (Spec is 3.99” I believe. My actual dims. Were a touch bigger.)
    - McMillan A5
    - Murphy Precision titanium 20 moa rail
    - American Rifle M10 30mm Rings
    - March 2.5-25x42 tactical

    Empty the rifle weights just under 12lbs
     

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  9. Doublezranch

    Doublezranch Well-Known Member

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    I second the Wyatts center feed box. They really make shooting longer VLD type bullets much easier.
     
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  10. Overkill338

    Overkill338 Well-Known Member

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    Dude, that thing, is.....amazing !!
     
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  11. Earnhardt

    Earnhardt Well-Known Member

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    Amazing guns guys!
    Anyone shot their 375 RUM at 2000 yards?
    Which ELR bullet would be the best for long range target shooting in the 375 RUM?
    How about the freebore reamer specs?
    The over the counter reamer I was looking at had .175" freebore, if I remember correct.
    Thanks
     
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  12. Whitetail312

    Whitetail312 Well-Known Member

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    I would also like to know the answer to that question
     
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  13. jasent

    jasent Well-Known Member

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  14. Whitetail312

    Whitetail312 Well-Known Member

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    Does anyone here have any experience with the 281 grain Hammer Hunters? They have a pretty good BC and seem to carry a rock solid reputation for other calibers