7mm STW range ???

Discussion in 'Long Range Hunting & Shooting' started by Guest, Oct 27, 2003.

  1. Guest

    Guest Guest

    What range should I be expecting from a 26" barrel w/ the 7stw? Does this caliber have enough to go 500 and beyond?

    Thanks!
     
  2. Boyd Heaton

    Boyd Heaton Well-Known Member

    Messages:
    1,071
    Joined:
    May 14, 2001
    Input Data
    Muzzle Velocity: 3175.0 ft/sec
    Ballistic Coefficient: 0.625
    Drag Function: G1
    Bullet Weight: 162 grains
    Sight Height: 1.70 inches
    Wind Cross Speed: 0 mph
    LOS Angle: 0 degrees
    Target Speed: 0 mph
    Zero Range: 100 yards
    Temperature: 39.6 °F
    Barometric Pressure: 29.92 in Hg
    Relative Humidity: 50.0 %
    Altitude: 1800 feet
    Air Density: 103 % of Sea Level


    --------------------------------------------------------------------------------

    Calculated Table
    Elevation: 3.347 moa
    Azimuth: 0.000 moa

    Range Velocity Energy Momentum Drop Windage Lead Time
    (yards) (ft/sec) (ft-lbs) (lbs-sec) (moa) (moa) (moa) (sec)
    0 3175.0 3626.0 2.28 --- --- --- 0.000
    100 3008.1 3254.8 2.16 -0.0 0.0 0.0 0.097
    200 2847.4 2916.3 2.05 -1.0 0.0 0.0 0.200
    300 2692.5 2607.6 1.94 -2.7 0.0 0.0 0.308
    400 2543.1 2326.3 1.83 -4.7 0.0 0.0 0.423
    500 2399.1 2070.3 1.73 -7.0 0.0 0.0 0.544
    600 2260.3 1837.6 1.63 -9.4 0.0 0.0 0.673
    700 2126.1 1626.0 1.53 -12.1 0.0 0.0 0.810
    800 1996.0 1433.0 1.44 -15.0 0.0 0.0 0.955
    900 1870.8 1258.8 1.35 -18.2 0.0 0.0 1.111
    1000 1750.8 1102.6 1.26 -21.7 0.0 0.0 1.276
    1100 1636.6 963.5 1.18 -25.6 0.0 0.0 1.454
    1200 1528.3 840.1 1.10 -29.8 0.0 0.0 1.643
    1300 1427.1 732.6 1.03 -34.5 0.0 0.0 1.847
    1400 1333.9 640.0 0.96 -39.7 0.0 0.0 2.064
    1500 1250.1 562.1 0.90 -45.5 0.0 0.0 2.297
    1600 1175.4 497.0 0.85 -51.8 0.0 0.0 2.545
    1700 1112.7 445.4 0.80 -58.8 0.0 0.0 2.808
    1800 1060.9 404.9 0.76 -66.6 0.0 0.0 3.084
    1900 1017.6 372.4 0.73 -75.1 0.0 0.0 3.374
    2000 980.8 346.0 0.71 -84.3 0.0 0.0 3.675
    Here is a drop chart from the Data on my 7STW....If your gun is accurate enough.500 yard shots on anything in NA should not be a problem.. [​IMG]
     
  3. Varmint Hunter

    Varmint Hunter Well-Known Member

    Messages:
    2,527
    Joined:
    Dec 26, 2001
    Using Boyd's data chart and the widely accepted rule of thumb that it takes about 1,000 ft/lbs to humanely harvest a whitetail deer; you will be able to hunt deer out to +1,000 yards with your 7STW. [​IMG]

    I normally limit myself to about 400yds with my 7STW because I download [​IMG]

    VH