what is the actual velocity?

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by rafi1982, Apr 18, 2013.

  1. rafi1982

    rafi1982 Member

    Messages:
    5
    Joined:
    Apr 10, 2013
    i read in lyman 47th reloading handbook about factory cartridges velocity and actual velocity.cal 270win 130g bullet has 3060 muzzel velocity same cartridge has 2883 velocity at 3 yards from 22" bbl length.in my loads i have 3166 velocity in 3 yards with same bullet (chronographs always in 3 yards)ma i have a 3343 muzzel velocity?can anyone help me thancks.
     
  2. Bart B

    Bart B Well-Known Member

    Messages:
    2,483
    Joined:
    Dec 25, 2005
    Your velocity numbers don't make sense to me.

    Could you check your data and verify it's correct, then let us know?

    If you chronograph numbers are what you say, I suspect your loads are way too hot and pressure's too high for safety.
     

  3. JackinSD

    JackinSD Well-Known Member

    Messages:
    531
    Joined:
    Jan 6, 2012
    If I am reading correctly, you are measuring with a chrono from 3 yards?

    If you are, you are way too close and getting muzzle blast also. Try moving the chrono to 15-20 ft away from the muzzle.