7mm rsaum load data for 1000 yd.

Discussion in 'Reloading' started by bluedeer, Dec 13, 2007.

  1. bluedeer

    bluedeer Well-Known Member

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    anyone shooting this cartridge and 168 or 180 Bergers? I/m getting excellent accuracy with the 180,but the velocity is 2800fps,I/ve got a 28" barrel,seems there's not much data on this round.My load is 57 grs. H4831sc. Thank's
     
  2. James H

    James H Well-Known Member

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    I just finished mine, put the DE brake on yesterday. I have fired a total of 5 rounds for barrel break-in and not at a target so I am not much help yet.
    I am planning to shoot the 162 A-Max but did pick up some 180 Bergers to compare. I am going to try H-4831sc with the 162s but think H-1000 may be better with the 180s.
    I plan to do some development soon but it's hard to get excited about it when it's 17 degrees outside:D.
    I have been hearing from others that they are getting 3000fps with the 180s but that is with a 30" barrel, mine ended up at 27 1/2".
    I'll update if I get any data.
    James
     

  3. bluedeer

    bluedeer Well-Known Member

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    Your probably right,I think 4831 peaks too quickly with the 180,I/ve tried RL-25,but accuracy wasn't there.Maybe I/ll try the H1000,if it works out I/ll let you know.The 168 Berger states b. c. of .648 the 180 .684.Maybe best to get someone with Quickload program to run the numbers and find out.Thank's,Archie
     
  4. Wild_Bill

    Wild_Bill Well-Known Member

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    Retumbo

    Hi try Retumbo I use it in my Model7 it has a 22" brl and it gives the best velocity and extreem spreds with 160gr+ projectiles .

    H1000 is a close seccond I am building a 7mm saum for F Class shooting to 1200yards and it will have a 3" Lawton 8 twist cut barrel and it will be using Retumbo and 175gr Sierra's and 200gr Wildcats.

    Cheers Bill
    Australia
     
  5. linksmechanic

    linksmechanic Well-Known Member

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    +1 on the retumo best powder for 7mm and heavy projectiles.