sierra ballistic program?

Discussion in 'Rifles, Bullets, Barrels & Ballistics' started by jayran, Apr 9, 2009.

  1. jayran

    jayran Well-Known Member

    Messages:
    70
    Joined:
    Feb 17, 2009
    I am new to all the technology out there and my brother and i are getting into longrange shooting. Here's the question- purchased the sierra program and a chrono entered the data and field tested. It wasnt even close, no matter the data put in other than dropping muzzle velocity down from 3060 to2200 it wasnt close??? what could we be doing wrong, or is it the program???
     
  2. jwp475

    jwp475 Well-Known Member

    Messages:
    2,595
    Joined:
    Feb 4, 2005
    What cartridge are you shooting, what bullet, what muzzle velocity did you get?

    A ballistics soft ware program will only give out good information if you input good information
     

  3. jayran

    jayran Well-Known Member

    Messages:
    70
    Joined:
    Feb 17, 2009
    257 weatherby , mv3060, 115 bergers , we had all the data for it?
     
  4. jwp475

    jwp475 Well-Known Member

    Messages:
    2,595
    Joined:
    Feb 4, 2005
    What do you mean by "we had all the data for it"? be more specific, how did you aquire your muzzle velocity, the humidity, the alltitude. was it sunny out or over cast? what BC did you use? We need a lot more info if we are to help with your problem
     
  5. jayran

    jayran Well-Known Member

    Messages:
    70
    Joined:
    Feb 17, 2009
    it was a sunny day, my gps for elevation, weather station at home for humitity and pressure, beta master chrono,nikon rangefinder for distance,the weird thing was that the program had the 115 berger in its bullet choice and didnt show bc. the only thing i guess could be the rangefinder?