Nightforce NP-R1

Discussion in 'Long Range Scopes and Other Optics' started by 1eye, Feb 27, 2010.

  1. 1eye

    1eye Well-Known Member

    Messages:
    96
    Joined:
    Feb 8, 2009
    I think I have this figured out on using this reticle as a range finder, is this right if using a coyote factor of 10 inches. NP-R1 set on 22 X
    1 MOA elevation per line.

    200 yds use (is) 5 lines
    300 yds use 3.2 lines
    400 yds use 2.5 lines
    500 yds use 2 lines
    600 yds use 1.6 lines
    700 yds use 1.5 lines
    800 yds use 1.2 lines

    Any help will be appreciated . Maybe I should that book (MOA Figures For Dummies)
     
  2. sscoyote

    sscoyote Well-Known Member

    Messages:
    1,258
    Joined:
    Feb 26, 2003
    That's very close. U can get a bit more precise by subtracting 1 line thickness, since most guys bracket a tgt. between line stadia instead of center of line to center of line. This may seem like splitting hairs but will make a geometrically greater difference at longer ranges.
     

  3. WildcatB

    WildcatB Well-Known Member

    Messages:
    461
    Joined:
    Jan 27, 2008
    Distance = (size of target in inches) divided by (MOA reading) times (100) times (.955)

    This is what I got for your's:

    moa | size/moa*100 | *.955
    5............200...........191
    3.2.........313...........298
    2.5.........400...........382
    2............500...........478
    1.6.........625...........597
    1.5.........667...........637
    1.2.........833...........796

    If your scope was SMOA (Shooters Minute of Angle) instead of MOA (Minute of Angle) you would't have to multiply by the .955

    You can practice this interactively on Horus Vision's website - remember their ranging reticle is SMOA not MOA. For your's you'd still have to multiply by .955

    Here's the link: http://horusvision.com/img/hrsgame.swf