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Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by StraightShot, Sep 18, 2013.

  1. StraightShot

    StraightShot Active Member

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    Jan 13, 2012
    I just got home from a great morning at the range. I have been the process of getting some loads worked up for my browning 7mm and my rem 700 .243. The other night worked up 3 different loads for each gun.

    In the 7mm i'm working with the 140 grain barnes ttsx.
    Topped with a vortex viper 6-20x50 30mm tube
    My first 3 tries went like this

    61 grains of H4831
    1 shot- 2800,
    2-2848
    3-2837
    No signs of pressure
    3 shot 1" group

    63 grains of H4831
    1-2961
    2-2970
    3-2966
    No signs of pressure
    3 shot 1/2" group

    65 grains H4831
    1- 3079- high pressure signs
    2- no shot
    3- no shot

    Conclusion
    the 63 grains of h4831 very accurate but I would prefer some more velocity.
    So i'm going to try a few other powders in hope to find some more velocity and accuracy.


    .243
    Remington 700
    topped with a vortex crossfire
    95 gr berger VLD
    I tried 2 different loads

    37 grains of h4895
    1- 3029
    2- 3027
    3- 3030
    no sign of pressure
    2 shots basicly same hole 1 shot 1/4' left

    37 grains varget
    1- 2950
    2-2961
    3-2940
    no signs of pressure 3/4-1" group

    Hoping to get a little more velocity and i'm in no hurry for the rifle to be ready to go so I will keep playing some more.


    I also shot some factory loads out of my rem 700 22-250
    hornady 55 grain vmax loads.
    1-3678
    2-3682
    3-3658
    4-3675
    5-3669

    Right close to a 1" group at a 100yards

    Just thought I would share.
     
  2. jkupper

    jkupper Well-Known Member

    Messages:
    436
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    Jan 8, 2013
    The first group with the 243 sounds great. Are you sure you did not pull the shot that was a little left that way? Either way it is a great load with very little deviation in velocity.

    The 7mm looks to have shot the 2nd group very well, with little deviation. I would not give up on it, but remember it in case you cannot find something faster.

    My 7 RM groups well at low velocity, 2870fps. I have decided to live with it, and it is shooting well out to 1000 yards. I decided that accuracy, and low deviation, are more important than speed. Good luck with your development. Keep us posted!

    Joe
     

  3. StraightShot

    StraightShot Active Member

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    I may have pulled the other shot on that load in the .243. I'm going to load a few more of that same set up and shot it again and compare it to a couple loads I wanted to try of the h414.

    In the 7rm I forsure have that load saved as I completely agree with you. I will take the accuracy and speed of that load over more velocity and less accuracy.

    Thanks for chiming in.
    Justin
     
  4. blacknzr1

    blacknzr1 Well-Known Member

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    Jan 28, 2012
    if that 7mm is a 7mm rem mag, and if I was you, I would change powder or something. that's pretty much 7mm-08 speeds. a magnum should go a lot faster, easily. and still keep accuracy and a low ES.
     
  5. jkupper

    jkupper Well-Known Member

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    Depends on the rifle. It can go faster, definitely, but some rifles are more accurate at slower loads.
     
  6. StraightShot

    StraightShot Active Member

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    It is a 7mm Remington mag. I will be switching powders and trying some more loads in it.
     
  7. blacknzr1

    blacknzr1 Well-Known Member

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    Jan 28, 2012
    I use h1000 with an es of under 20, I forget the exact number now, doing 3100 with a one hole group at 100 and an inch at 300 (162 amax) I could drive them harder but like you, id rather settle there with good accuracy and es.
     
  8. Woody26

    Woody26 Well-Known Member

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    Feb 10, 2012
    Try some retumbo in your 7mm. My sendero likes it better than h1000 with the 180 bergers. It will also give you a little more speed
     
  9. StraightShot

    StraightShot Active Member

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    Sounds like a good load there
     
  10. StraightShot

    StraightShot Active Member

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    I don't have any retumbo on hand but I bet one of the guys a know who reload will have some I can try in it.