Using a BC of .387 and velocity of 3375 FPS
Jimmy K
JBM - Calculations - Trajectory (Simplified)
Trajectory (Simplified)
Input Data
Ballistic Coefficient: 0.387 G1 Caliber: 0.308 in
Bullet Weight: 150.0 gr
Muzzle Velocity: 3375.0 ft/s
Sight Height: 1.50 in Line Of Sight Angle: 0.0 deg
Cant Angle: 0.0 deg
Wind Speed: 10.0 mph Target Speed: 10.0 mph
Temperature: 59.0 °F Pressure: 29.92 in Hg
Humidity: 0.0 % Altitude: 1000.0 ft
Std. Atmosphere at Altitude: Yes Pressure is Corrected: Yes
Zero at Max. Point Blank Range: No Target Relative Drops: Yes
Round Output to Whole Numbers: No
Output Data
Elevation: 3.972 MOA Windage: 0.000 MOA
Atmospheric Density: 0.07426 lb/ft³ Speed of Sound: 1112.6 ft/s
Maximum PBR: 393 yd Maximum PBR Zero: 335 yd
Range of Maximum Height: 186 yd Energy at Maximum PBR: 1956.8 ft•lbs
Sectional Density: 0.226 lb/in²
Calculated Table
Range Drop Drop Windage Windage Velocity Mach Energy Time Lead Lead
(yd) (in) (MOA) (in) (MOA) (ft/s) (none) (ft•lbs) (s) (in) (MOA)
0 -1.5 *** 0.0 *** 3375.0 3.033 3793.2 0.000 0.0 ***
25 -0.6 -2.1 0.0 0.2 3307.7 2.973 3643.4 0.022 4.0 15.1
50 0.2 0.4 0.2 0.3 3241.5 2.913 3499.0 0.045 8.0 15.2
75 0.7 0.9 0.4 0.5 3176.3 2.855 3359.7 0.069 12.1 15.4
100 1.0 1.0 0.6 0.6 3112.1 2.797 3225.3 0.093 16.3 15.6
125 1.1 0.9 1.0 0.8 3048.9 2.740 3095.7 0.117 20.6 15.7
150 1.0 0.6 1.5 0.9 2986.7 2.684 2970.5 0.142 25.0 15.9
175 0.6 0.3 2.0 1.1 2925.3 2.629 2849.7 0.167 29.4 16.1
200 -0.0 -0.0 2.7 1.3 2864.8 2.575 2733.0 0.193 34.0 16.2
225 -0.9 -0.4 3.4 1.5 2805.1 2.521 2620.4 0.220 38.6 16.4
250 -2.1 -0.8 4.3 1.6 2746.3 2.468 2511.6 0.247 43.4 16.6
275 -3.5 -1.2 5.2 1.8 2688.2 2.416 2406.5 0.274 48.2 16.8
300 -5.3 -1.7 6.3 2.0 2630.9 2.365 2305.0 0.302 53.2 16.9
325 -7.4 -2.2 7.4 2.2 2574.4 2.314 2207.0 0.331 58.3 17.1
350 -9.8 -2.7 8.7 2.4 2518.5 2.264 2112.2 0.361 63.5 17.3
375 -12.5 -3.2 10.1 2.6 2463.3 2.214 2020.7 0.391 68.8 17.5
400 -15.6 -3.7 11.6 2.8 2408.9 2.165 1932.4 0.422 74.2 17.7
425 -19.1 -4.3 13.2 3.0 2355.1 2.117 1847.0 0.453 79.7 17.9
450 -23.0 -4.9 15.0 3.2 2302.0 2.069 1764.6 0.485 85.4 18.1
475 -27.3 -5.5 16.9 3.4 2249.5 2.022 1685.1 0.518 91.2 18.3
500 -32.0 -6.1 18.9 3.6 2197.7 1.975 1608.4 0.552 97.1 18.6
525 -37.1 -6.8 21.1 3.8 2146.6 1.929 1534.4 0.586 103.2 18.8
550 -42.7 -7.4 23.4 4.1 2096.1 1.884 1463.1 0.622 109.4 19.0
575 -48.9 -8.1 25.9 4.3 2046.3 1.839 1394.5 0.658 115.8 19.2
600 -55.5 -8.8 28.5 4.5 1997.2 1.795 1328.4 0.695 122.3 19.5
625 -62.7 -9.6 31.3 4.8 1948.9 1.752 1264.8 0.733 129.0 19.7
650 -70.5 -10.4 34.2 5.0 1901.2 1.709 1203.7 0.772 135.9 20.0
675 -78.8 -11.2 37.3 5.3 1854.4 1.667 1145.1 0.812 142.9 20.2
700 -87.8 -12.0 40.6 5.5 1808.2 1.625 1088.9 0.853 150.1 20.5
725 -97.5 -12.8 44.1 5.8 1762.9 1.584 1035.0 0.895 157.5 20.7
750 -107.8 -13.7 47.8 6.1 1718.5 1.545 983.4 0.938 165.1 21.0
775 -118.9 -14.7 51.6 6.4 1674.9 1.505 934.1 0.982 172.9 21.3
800 -130.8 -15.6 55.7 6.7 1632.2 1.467 887.1 1.028 180.9 21.6
825 -143.5 -16.6 60.0 6.9 1590.4 1.429 842.3 1.074 189.1 21.9
850 -157.0 -17.6 64.5 7.2 1549.6 1.393 799.7 1.122 197.5 22.2
875 -171.5 -18.7 69.2 7.6 1509.9 1.357 759.2 1.171 206.1 22.5
900 -186.9 -19.8 74.2 7.9 1471.2 1.322 720.8 1.221 215.0 22.8
925 -203.3 -21.0 79.3 8.2 1433.7 1.289 684.5 1.273 224.1 23.1
950 -220.7 -22.2 84.8 8.5 1397.3 1.256 650.2 1.326 233.4 23.5
975 -239.3 -23.4 90.4 8.9 1362.2 1.224 617.9 1.380 243.0 23.8
1000 -259.0 -24.7 96.3 9.2 1328.4 1.194 587.6 1.436 252.8 24.1
As you can see ...you will need to be -0.6 @ 25 yds and + 0.2 @ 50 Yds
IF you are using a bullet that matches these numbers BC & Velocity.
http://www.jbmballistics.com/calculations/calculations.html