7mm Rem Mag Relaoding ?'s

Discussion in 'Reloading' started by jcmckinney1, Feb 18, 2013.

  1. jcmckinney1

    jcmckinney1 Well-Known Member

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    What is the best set of full match dies for a 7mm Rem Mag? Redding, Hornady, ???

    I am looking at IMR 7828 and Retumbo. Which one will work best from flat lands of Texas to the high mountains of Colorado?

    Any load data for IMR 7828 or Retumbo? Trying to get 3k fps. w/o pressure issues for stated areas.

    7mm Remington Mag
    168 gr. Berger Hunting VLD
    26" Obermeyer M24 contour 1:8.75 twist
    Stiller Tac 300 action
    Manner T2-A
     
  2. Joe King

    Joe King Well-Known Member

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    The die sets assuming the top end only, I would say Redding, Forester, and RCBS. I'm not sure how good one is over the other though. I have 1 Redding Benchrest S 3die set and I love it. But I think you could get results very close to it with a Lee collet die, redding body die, and the seater of your choice as long as it's a good seater and save a C note in the process.

    3k should be doable with either Retumbo, Ramshot Magnum (shows highest velocities in the Berger manual), or H1000. If you use the Classic hunter you should also expect to see a drop in velocity due to the longer bearing length, though it's not enough to notice in reality.
     

  3. CPGfan

    CPGfan Well-Known Member

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    The last couple of Redding dies I have bought have been very rough on the inside. I haven't seen real good quality in Redding dies lately. I would look very hard at Forster or Hornady. I have a couple of sets of Hornady and they produce some really straight ammo. 3k in your setup should be very doable with 168's. Like the previous post said, good powders would be Retumbo and Ramshot Magnum. I wouldn't be afraid to look at H1000 either. 7828 has a history of being a pretty accurate powder but is not very temp stable.

    I'd start at 70 grains of Retumbo, 69 Ramshot Magnum, and 68 H1000. Good Luck
     
  4. jcmckinney1

    jcmckinney1 Well-Known Member

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    Thanks for the info. I have read 7828 is temperamental so I was a little concerned. I will try Retumbo and H1000. Berger stated the fill ratio to be 104.7% for Retumbo and 100.1% for H1000 with Quick Load data. I would like to stay away from compressed loads as I have had issues with them in the past.
     
  5. Flare

    Flare Well-Known Member

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    I use Hornady dies for mine and have no complaints and they produce great ammo.

    Corey
     
  6. Lefty7mmstw

    Lefty7mmstw Well-Known Member

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    7828 works well in the 7mag; I'd stay to 150 grain or heavier though. I've seen it have issues(unstable accuracy) with 140 grain pills in my current rifle if the temp. drops below 50 degrees or so. With 150gr. and heavier it doesn't show any problems. I'd look at rl22 and h1000 as all around powders here; I've used plenty of rl22 in my 7rems and it always does well.
     
  7. 7stw

    7stw Well-Known Member

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    I have had very good luck, and incredible consistency with H1000, and 168 VLD bullets, and the primer I, and a few others have used is the Winchester WLR primer. In the seven mag, you do NOT need a mag primer. It is ok to use it, but really not needed . My load is 67.0-H1000-168 VLD ,@ 3.336 OAL. That puts me at .040 from the throat, and 2977 velocity. There is headroom for more powder, which would give you the 3000 you are looking for, but the deer I have shot with that load did not know the difference, and didn't want to either. Additionally, RL22 has always been a favorite, but I feel the H1000 has the edge, and is more consistent, and has lower ES,SD as well.
     
  8. clamb4

    clamb4 Well-Known Member

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    My load is :
    70.4 g Retumbo
    OAL 3.400" that .050 off lands
    3050 mv
    26" barrel pac-nor
     
  9. Lefty7mmstw

    Lefty7mmstw Well-Known Member

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    Bullet weight????
     
  10. jcmckinney1

    jcmckinney1 Well-Known Member

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    I will assume it is the Berger 168gr. Hunting VLD. Is this a compressed load? Thanks for the info.
     
  11. g0rd0

    g0rd0 Well-Known Member

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    In my 7rm 7828 is good for 140, great for 150 and back to good for 162
    rl22 is poor with 140 and 150, better than 7828 for 162, and awsome with 175
    I haven't yet tryed h1000 but will as soon as I can get my hands on some
     
  12. Joe King

    Joe King Well-Known Member

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    I would bet it is 168gr, Berger's listed max for 180gr with Retumbo is 69.2gr, 70.4gr is pretty hot.
    For 168gr, max by Berger for Retumbo is 71.2 at 106% so 70.4gr would likely be slightly compressed.
     
  13. clamb4

    clamb4 Well-Known Member

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    Sorry I didn't put the bullet in the above load data. Yes its 168g berger VLD.
     
  14. soren

    soren Well-Known Member

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    I put together a load using 58.5gr. H4831SC, Norma brass, Fed. 210 primer, 168gr. Berger VLD, 3.390" oal. Shoots under 1/2" group at 200 yds. Didn't chrony yet. I doubt it is a barn burner.

    This is my most accurate load for my LSR 7mmRM, so far.
     
    Last edited: Feb 20, 2013