Contour and barrel length suggestions for 7mm RemMag

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by gamedog, Sep 29, 2008.

  1. gamedog

    gamedog Well-Known Member

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    Starting a new rifle project and am looking for some suggestions on barrel contour and length.

    Looking to build a 7mm Rem Mag in a semi lightweight hunting combination. Not a heavy weight bench gun, yet something a guy can pack all day.

    I 'm guessing a #3 - # 6 contoured barrel in 26"-27" length . Just dont want to loose anything (velocity,accuracy) by going to small.

    Thanks
     
  2. MagMan

    MagMan Well-Known Member

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    I wouldn't hesitate to do a 7mm RM on a #4 Lilja and I'd go all of 27". I have one that is fluted and it makes for a nice carry gun just don't put a scope on that will make it top heavy (like the big NSX's).
     

  3. AJ Peacock

    AJ Peacock Well-Known Member

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    I have a light 7mm RM with a 24" barrel. I loose a little velocity, but it's 8lbs with scope and bipod! I have no problem getting a bit over 3000fps with the 160gr Accubond and 1/4 - 1/3 MOA groups if I keep the barrel cool. I shot a .19x" a while back from the prone position at 200yds. I wouldn't mind the barrel being a bit longer, but this is my pack anywhere rifle and I like having it handy.

    I can get 3100fps with the 24" barrel, but it opens the groups to 3/4-1" at 100yds.

    AJ
     
    Last edited: Sep 29, 2008
  4. trebark

    trebark Well-Known Member

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    9lbs is about as heavy a rifle as I like to tote around. That's just how much my rifle weighs. You can see here: http://www.longrangehunting.com/forums/f53/my-280-a-32771/
    You will see that it's a #4 douglas taper barrel 24". You wouldn't gain much weight by going to 26" or 27" especially if you fluted the barrel.
     
  5. davewilson

    davewilson Well-Known Member

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    i'm planning a lightweight project and just talked to an MFIC at Kreiger barrels the other day. i'm building a 338 and their minimum size for a chrome molly barrel is 3 sizes smaller than a stainless barrel. i'm going with the CM because it's stronger than SS and a better value.
     
  6. Derek M.

    Derek M. Well-Known Member

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    My current 7mag wears a #4 Shilen, 24" long. If I could do it over, I'd go with a #3.

    I have in my safe a beautiful piece of steel from Krieger, a SS 7mm barrel ready to cut, crown, chamber, and install on my next project, 4 groove if I recall.

    I think and OD at the muzzle of .630 is about perfect.

    My next 7mag will have a 26" bbl. Don't get caught up on too much velocity loss. You mentioned it being a carry rifle, therefore, I'd not go any longer than 27" and 25-26" is about perfect.

    Good luck.
     
  7. kiwi3006

    kiwi3006 Well-Known Member

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    I have just rebarelled my 30/06 to 7mm mag. I ended up going with a 26" No 5 contour. All up rifle weight is around 9 lb. It's not too bad to carry and the recoil is fine (no muzzle brake). A No 4 contour would be ok and a bit lighter.
    I ordered a No 4 contour but the barrel maker I used has a different numbering system. Their No 4 is equvalent to a Lilja No 5.

    Stu.
     
  8. J E Custom

    J E Custom Well-Known Member

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    I would go with a # 5 or #6 Lilja contour (NOT strait taper) with a 24''minimum
    and a 26'' Max length barrel non fluted.

    Log on to Lilja's web site and look at the difference in the barrel weights from #3,s
    to #6,s There is only 1 pound difference!! and like Magman said doint hang a 3 or 4
    lb scope on it if weight is that much of an issue.

    Most of my rifles weigh 10 to 12 lbs and thats not to heavy to carry plus
    the steady you down when you are out of breath and dont have the best
    rest available.

    Just my opinion
    J E CUSTOM
     
  9. gamedog

    gamedog Well-Known Member

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    Thanks for the feed back guy's:)