7mm Rem Mag Barrel length

Discussion in 'Gunsmithing' started by denphillips2, Sep 9, 2011.

  1. denphillips2

    denphillips2 Well-Known Member

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    Oct 19, 2009
    OK guys,
    If you had a choice, how long would you have your barrel for a 7mm Rem Mag?

    Going to be for long range hunting of course :D
     
  2. jrw1976

    jrw1976 Well-Known Member

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    Mar 31, 2010
    I have one that is 26" and one that is 28". The 28" is definitely my favorite. It shoots the 168 grain matrix bullet at 3060fps and into one hole groups at 100 yards and not much bigger than that at 200 yards. The 28" barrel shoots about 60 fps faster than the 26" with the same load so my vote goes to the 28". But that might just be me.

    Jason
     

  3. J E Custom

    J E Custom Well-Known Member

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    Jul 29, 2004
    The 7 rem mag can use a long barrel. minimum should be 26" and for all the velocity available you need/can use 28" to 30"


    I had a 7mm rem mag with a 29.4" barrel I was able to push a 168 gr SMK to 3254 ft/sec.

    For hunting I would probably go with a 28" for all round use.

    J E CUSTOM
     
  4. denphillips2

    denphillips2 Well-Known Member

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    That's what I wanted to here.
    I am putting a very slightly used 284 barrel on this gun. Current barrel length is 32". Threads need to be cut off because it is going on a trued receiver. Just too sloppy for my liking. There is about 2" of straight .750 at the muzzle. I'll trim the muzzle back enough to put the brake on so it covers the straight section. It should end up about 29.5-30". Should be a sweet shooting rig.

    Thanks!
     
  5. denphillips2

    denphillips2 Well-Known Member

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    Oct 19, 2009
    OK,
    How about throat? I am setting it up for 180gn Berger VLD.

    Would the ideal seating length put the boatail/body junction at the shoulder neck junction?

    There is plenty of room in the magazine.

    I have a short throat reamer with a throating reamer to set the lenght.

    Glued the bolt body bushings last nigh. Going to do the bolt today sometime and hopefully the barrel this evening.
    Thanks!