yurt_boy 0 Posted August 29, 2006 Report Share Posted August 29, 2006 Recently obtained a Saiga 7.62 and am hoping to get some input from the forum here. At what range would you recommend I sight the rifle in at? Once sighted in at that range, would point of aim and point of impact converge anywhere else? At other standard ranges (ie every 100 yards), how high or low would the bullet impact? What is the maximum effective range? Any and all help would be appreciated. Thanks. Quote Link to post Share on other sites
ProgCoder 0 Posted August 29, 2006 Report Share Posted August 29, 2006 (edited) The 7.62x39 has similar ballistics as a .30 30 Winchester I'd recommend it being sighted in at 100 yards. From Winchester's Website... www.winchester.com Cartridge 7.62x39mm Russian Bullet Wt. Grs. 123 Bullet Type Full Metal CXP Guide No. NA Barrel Length (in) NA Velocity in Feet Per Second (fps) Muzzle 2355 100 2026 200 1726 300 1463 400 1247 500 1093 Energy in Foot Pounds (ft-lbs.) Muzzle 1515 100 1121 200 814 300 584 400 425 500 326 Trajectory, Short Range Yards 50 0.5 100 0 150 -2.6 200 -4.6 250 -15.6 300 -27.1 400 - 500 - Trajectory, Long Range Yards 100 3.8 150 3.2 200 0 250 -6.1 300 -15.6 400 -47.6 500 -102 Edited August 29, 2006 by ProgCoder Quote Link to post Share on other sites
gtsteve03 0 Posted August 29, 2006 Report Share Posted August 29, 2006 Recently obtained a Saiga 7.62 and am hoping to get some input from the forum here. At what range would you recommend I sight the rifle in at? Once sighted in at that range, would point of aim and point of impact converge anywhere else? At other standard ranges (ie every 100 yards), how high or low would the bullet impact? What is the maximum effective range? Any and all help would be appreciated. Thanks. Using the Remington Shoot free ballistics program I downloaded, I figured that a 190yd zero range with the 7.62x39 will shoot 3 inches high at 100yds and won't drop to 3 inches below zero until about 225yds, so that gives you a "point-blank range" of 225yds with a 190yd zero. If you draw a 6 inch diameter circle on your chest you will see that if you within 3 inches high or low of where you're aiming if you are aiming for the center of mass of a badguy, you'll be fine out to 225yds. Hope that was helpful! Quote Link to post Share on other sites
yurt_boy 0 Posted August 30, 2006 Author Report Share Posted August 30, 2006 Recently obtained a Saiga 7.62 and am hoping to get some input from the forum here. At what range would you recommend I sight the rifle in at? Once sighted in at that range, would point of aim and point of impact converge anywhere else? At other standard ranges (ie every 100 yards), how high or low would the bullet impact? What is the maximum effective range? Any and all help would be appreciated. Thanks. Using the Remington Shoot free ballistics program I downloaded, I figured that a 190yd zero range with the 7.62x39 will shoot 3 inches high at 100yds and won't drop to 3 inches below zero until about 225yds, so that gives you a "point-blank range" of 225yds with a 190yd zero. If you draw a 6 inch diameter circle on your chest you will see that if you within 3 inches high or low of where you're aiming if you are aiming for the center of mass of a badguy, you'll be fine out to 225yds. Hope that was helpful! Thank you both! Exactly what I was looking for! Quote Link to post Share on other sites
Sikat 0 Posted September 3, 2006 Report Share Posted September 3, 2006 (edited) I chronographed Wolf. Based on the average velocity and a few different sources on the ballistic coefficient of the bullet....here's some data. This was from a 16" barrel. Some places list the BC being as low as .180, with others as high as .280. .280 is way too generous in my experience, and .180 a bit low. Name: 7.62x39mm BC: 0.2400 (G1) Temperature: 73.0 degrees Cant Angle: 0.0 deg. Weight: 124.0 grains Humidity: 73 % Sight-In Range: 200 yd. Caliber: .311 Pressure: 29.92 in. Muzzle Angle: 8.466 moa Sight Height: 2.00 inches Crosswind: 8.0 mph TargetSpeed: 0.0 mph LOS Angle: 0.0 degrees Altitude: 25 ft. Target Angle: 90.0 deg. Sect. Density: 0.183 Air Density: 0.0738 lb./ft.^3 Air Density: 96.5 % of Sea Level Range Drop Velocity Energy Momentum Windage Lead Time Elevation (Yards) (inches) (ft/sec) (ft-lbs) (lb-sec) (inches) (inches) (secs) (moa) 0 -2.00 2345.0 1514.0 1.2913 0.00 0.0 0.000 ----- 25 0.00 2259.8 1406.0 1.2443 0.09 0.0 0.033 0.00 50 1.58 2176.3 1304.0 1.1984 0.35 0.0 0.066 3.16 75 2.70 2094.5 1207.9 1.1533 0.80 0.0 0.102 3.60 100 3.32 2014.6 1117.4 1.1093 1.44 0.0 0.138 3.32 125 3.41 1936.6 1032.5 1.0664 2.28 0.0 0.176 2.72 150 2.91 1860.5 953.0 1.0245 3.35 0.0 0.216 1.94 175 1.79 1786.4 878.6 0.9837 4.64 0.0 0.257 1.02 200 -0.01 1714.6 809.4 0.9441 6.18 0.0 0.300 -0.01 225 -2.56 1645.1 745.1 0.9058 7.96 0.0 0.344 -1.14 250 -5.90 1578.0 685.6 0.8689 10.02 0.0 0.391 -2.36 275 -10.12 1513.7 630.8 0.8335 12.35 0.0 0.440 -3.68 300 -15.29 1452.2 580.7 0.7997 14.98 0.0 0.490 -5.10 325 -21.49 1393.9 534.9 0.7675 17.90 0.0 0.543 -6.61 350 -28.81 1338.9 493.5 0.7372 21.13 0.0 0.598 -8.23 375 -37.34 1287.4 456.4 0.7089 24.68 0.0 0.655 -9.96 400 -47.19 1239.9 423.2 0.6827 28.54 0.0 0.715 -11.80 425 -58.45 1196.4 394.1 0.6588 32.71 0.0 0.776 -13.75 450 -71.22 1157.2 368.7 0.6372 37.19 0.0 0.840 -15.83 475 -85.63 1122.1 346.7 0.6179 41.96 0.0 0.906 -18.03 500 -101.75 1090.9 327.7 0.6007 47.01 0.0 0.974 -20.35 That's for a 200 yard zero. Doesn't even go 4" high inbetween. Out to 350 yards, it's hitting like a .357mag. Not bad, but not what you'd want from a rifle. Like the .223, these cartridges are 200-250 yard cartridges. They were never meant to be the long-range .30 cal "battlerifle" cartridges of WW2 where you extend good performance out to 600 yards. So, with 200 yard zero, you're basically point-blank-range to 275 yards easy. PBR means you don't have to adjust your elevation. Just point and shoot and you will hit. This is assuming that you're kill-zone is 11" or so...which is about the typical width of the vital zone. IN order to sight in for 200 yards using this data (your data and variables might be different)...you'd have to zero at 25 yards. Edited September 3, 2006 by Sikat Quote Link to post Share on other sites
Cobra 76 two 2,677 Posted September 3, 2006 Report Share Posted September 3, 2006 Very impressive...Thanks man! It would be nice to see a comparison with the Saiga .223 and .308 included. Quote Link to post Share on other sites
yurt_boy 0 Posted September 3, 2006 Author Report Share Posted September 3, 2006 Holy crap! YOU ARE THE MAN! Thank you. Quote Link to post Share on other sites
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