7 mm hart magnum

Discussion in 'Long Range Hunting & Shooting' started by ann brezinski, Sep 13, 2013.

  1. ann brezinski

    ann brezinski Well-Known Member

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    Does any one own one of these?
    Thinking of building one on a 700 action.hart says they will rechamber a seduro for me.looking for your info before going further on this.
    Gary b
     
  2. ShootnMathews

    ShootnMathews Well-Known Member

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    My friend built a 700 action and Hart barrel w/ brake in a 7mm ultra mag. It's a nail driver. Not sure what the stock is. Shoots one ragged hole at 100 yards. Took him almost a year to get the load right though. I can't really kick him too much, took me 5 months to get the right load for my LRH.
     

  3. ann brezinski

    ann brezinski Well-Known Member

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    Sorry,
    i am talking about the custom cartrige or wildcat 7 mm hart with 40 degree shoulder.
    Gary b
     
  4. WildRose

    WildRose Well-Known Member

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    Ann are you talking about the 7x61 Sharp and Hart Magnum?

    Very similar in peformance to the 7mm Rem mag/7mm Dakota (between the two) if I remember right.

    Had a friend who shot one made by Hart many years ago primarily as an antelope and open country coyote hunter.

    It performed extremely well for him.
     
  5. 4bycamper

    4bycamper Well-Known Member

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    It looks like the 7x61 has the same power as the 280 Rem.
    162 sst @ 2900 each.

    And the 280 Rem is a whole lot more common if you ever needed to
    buy ammo when you are out of town. lightbulb

    Just sayin'
     
  6. MontanaRifleman

    MontanaRifleman Well-Known Member

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    If it is the 7x61 Sharp & Hart, it is about 5 water gr less capacity than the 7 RM. So more between the 7 RM and 280 or 284, actually, a lot closer to the 7 RM.
     
  7. huntinfool18

    huntinfool18 Well-Known Member

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    I did some work on a 7mm hart that bobby hart built. If its the one your talking about it is basically just a 7mm rem mag ackley improved. It uses 7 rem mag brass and fire form like any other ackley wildcat. He built it around and recommended the 140 nosler btip with 74 gr of rl22 at around 3450+. I also worked up a load with the berger 180vld at 3100+with h1000. Both of these loads were sub 1/4 Moa. I still have the reloading dies I was actually thinkin of building myself one of these for my light weight carry rifle.
     
  8. WildRose

    WildRose Well-Known Member

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    You are correct. Sometimes memory is not what it should be. The only thing worse than getting old is not.
     
  9. WildRose

    WildRose Well-Known Member

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    OK then that must be the one I was remembering vs the S&H.