7x57 ballistics & brass

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by Bigunms, Sep 7, 2013.

  1. Bigunms

    Bigunms Well-Known Member

    Feb 7, 2012
    Is anyone here able to safely drive a 162 gr Amax to 2800 fps?

    Which brass are you using?
  2. benchracer

    benchracer Well-Known Member

    Dec 18, 2009
    According to Hodgdon data, it takes 284 Win or 280AI case capacity to safely reach 2800 fps from a 24" barrel. No way are you going to do that from a 7x57 case at safe pressures. If you go the AI route with a bit longer barrel and just the right powder, maybe. 2700 fps is achievable at modern pressures, though.

    I would advise using Norma brass either way. Prvi Partizan might be worth a try, as well. I started out using Remington brass in my Ruger #1A. I am not happy with it.