temp and altitude?

Discussion in 'Long Range Hunting & Shooting' started by outdooraddict, May 7, 2008.

  1. outdooraddict

    outdooraddict Well-Known Member

    Nov 13, 2007
    I live in south west Michigan where is flat. I am wondering hoe much temp and altitude effect poi. If I sight in my 300rum with a 200gr. accubond and retumbo powder and I dont plan on shooting at an animal past 7or 800 yds. I found a farmer who let me build a dirt mound and now I can shoot to 950yds. I am shooting twice a week 10 rds each day in the 300rum and 40-50 in the 17hmr. I am keeping 5" 10 shot group at 500yds and getting better. I know there is lots of room for improvement but Im still practcing.
  2. Bravo 4

    Bravo 4 Well-Known Member

    Jul 20, 2007
    Go to JBM's ballistic web page and punch in different numbers and see for yourself. Can make a hell of a difference when you go from one extreme to another, especially when you change both at the same time.