7 mm ultra max velocity

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by bwalker, Aug 19, 2004.

  1. bwalker

    bwalker Well-Known Member

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    What are you guys getting for max velocity with 140 and 160grm bullets? Be sure to include powder and barrel length.
     
  2. dbhostler

    dbhostler Well-Known Member

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    I'm running 3500 fps with NBT Moly and I-7828 out of a 26" bbl. Not the fastest, but fast enough.
    db
     
  3. bwalker

    bwalker Well-Known Member

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    How many grains of 7828? I assume your using a 140gr bullet?
     
  4. dbhostler

    dbhostler Well-Known Member

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    140 gr bullet with 92.0 grns I-7828 lit by a 215 over a PACT chrono.
    db
     
  5. daveosok

    daveosok Guest

    How many grains of powder are you using to achieve this velocity?
     
  6. bwalker

    bwalker Well-Known Member

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    DHostler, Have you tried any other powders lke h-1000, retumbo, wc870, rl-25,rl-22, Viht 170, aa8700, and aa 3100? There seems to be very little data oon loading various powders for this cartridge.