Guest 308Panther Posted July 26, 2007 Report Share Posted July 26, 2007 I was wondering if someone could run a .223 load thru a ballistic program for me?? The bullet would be 77 grs and the barrel would be 20 inches...Could you figure how much energy and velocity it would have at 800yrds?? Thanks in advance. 308Panther Link to comment Share on other sites More sharing options...
6mmBR Posted July 26, 2007 Report Share Posted July 26, 2007 What velocity would it start with? Cheers Dave Link to comment Share on other sites More sharing options...
Andrew Posted July 26, 2007 Report Share Posted July 26, 2007 I can't find a 77 grain bullet in my data base but I can find 75 and 80 grain. The larger question is what is the starting velocity you're thinking of with that 20" barrel? ~Andrew Link to comment Share on other sites More sharing options...
6mmBR Posted July 26, 2007 Report Share Posted July 26, 2007 Get us the start velocity and I have 77gn Sierra Matchkings in my program and can give you velocity and drops. Cheers Dave Link to comment Share on other sites More sharing options...
Guest varmartin Posted July 26, 2007 Report Share Posted July 26, 2007 With a start velocity of about 2500 fps/ shooting a 77 grn berger vld.... at 800 yards you will have 1151 fps left and 221 ft-lbs left. using Xbal and Load from a disc. Martin Link to comment Share on other sites More sharing options...
Guest 308Panther Posted July 26, 2007 Report Share Posted July 26, 2007 Did a bit of diggin and found these two..2750fps 2790fps 308Panther Link to comment Share on other sites More sharing options...
Guest varmartin Posted July 26, 2007 Report Share Posted July 26, 2007 All the checks ive done, and to get 2750 out of a 20 inch tube ...thats gonna be one hot load !! May be my data is incorrect ? Gonna have another look in load from a disc. Martin Link to comment Share on other sites More sharing options...
6mmBR Posted July 26, 2007 Report Share Posted July 26, 2007 Here you go Panther. Trajectory (Basic) Output Input Data Manufacturer: Sierra Description: .224 dia. 77 gr. HPBT MatchKing™ Muzzle Velocity: 2750.0 ft/s Sight Height: 1.50 in LOS Angle: 0.0 deg Cant Angle: 0.0 deg Wind Speed: 10.0 mph Target Speed: 0.0 mph Temperature: 59.0 °F Pressure: 29.92 in Hg Relative Humidity: 0.0 % Altitude: 0 ft Std. Atmosphere at Altitude: No Corrected Pressure: Yes Target Relative Drops: Yes Zero at Max. Point Blank Range: No Calculated Parameters Elevation: 3.77 MOA Azimuth: 0.00 MOA Atmospheric Density: 0.07647 lbs/ft³ Speed of Sound: 1116.5 ft/s Maximum PBR: 322 yds Maximum PBR Zero: 274 yds Range at Max Height: 152 yds Energy at PBR: 677.3 ft•lbs Sectional Density: 0.219 lbs/in² Calculated Table Range Drop Drop Windage Windage Velocity Mach Energy Time Lead Lead (yds) (in) (moa) (in) (moa) (ft/s) (none) (ft•lbs) (s) (in) (moa) 0 -1.5 *** 0.0 *** 2750.0 2.463 1292.8 0.000 0.0 *** 100 -0.0 -0.0 0.9 0.9 2499.3 2.239 1067.8 0.114 0.0 0.0 200 -4.1 -2.0 3.9 1.9 2262.2 2.026 874.8 0.241 0.0 0.0 300 -15.0 -4.8 9.3 3.0 2038.0 1.825 710.0 0.380 0.0 0.0 400 -34.3 -8.2 17.5 4.2 1827.6 1.637 571.0 0.536 0.0 0.0 500 -64.1 -12.2 28.9 5.5 1623.9 1.454 450.8 0.710 0.0 0.0 600 -107.1 -17.0 44.3 7.1 1439.5 1.289 354.2 0.906 0.0 0.0 700 -167.0 -22.8 64.0 8.7 1280.7 1.147 280.4 1.128 0.0 0.0 800 -248.1 -29.6 88.4 10.6 1153.4 1.033 227.4 1.375 0.0 0.0 900 -355.3 -37.7 117.1 12.4 1060.0 0.949 192.1 1.647 0.0 0.0 1000 -493.5 -47.1 149.5 14.3 992.1 0.889 168.3 1.940 0.0 0.0 Cheers Dave Link to comment Share on other sites More sharing options...
Guest 308Panther Posted July 26, 2007 Report Share Posted July 26, 2007 Thanks Boys... 308Panther Link to comment Share on other sites More sharing options...
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