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Posted: 9/11/2003 4:54:02 AM EDT
Hi,

I'm entering a competition on Sunday shooting back to 500 yards, I can get a 100 yard zero tomorrow but then will need to 'dial-in' 200, 300, 400 etc, unfortunalty I'm new to this tiny calibre and dont have a clue about its bullet drop, does anyone have a table or data they can mail me at chris.stevenson@nulc.ac.uk ? Its a DPMS with 20" 1 in 9 barrel. Many thanks.
Link Posted: 9/11/2003 5:01:00 AM EDT
[Last Edit: 9/11/2003 5:13:00 AM EDT by mr_wilson]
From here: [url]www.ammo-oracle.com[/url] Here's some Q3131A (M193) ballistic data, of course your mileage may vary: This is for a 20" barreled AR... Altitude 1480 feet 70 degrees 50% humidity. 55gr FMJBT Average cD over velocities: .267 Range Velocity Energy Momentum Drop Bullet Path Time of Flight (Yards) (Ft/Sec) (Ft/Lbs) (Lb-Sec) (inches) (inches) (Seconds) 0 3250.0 1289.70 0.79 0 -1.50 0.000000 25 3161.2 1220.20 0.77 -0.1 -0.79 0.023399 50 3074.2 1154.00 0.75 -0.43 -0.29 0.047458 75 2988.9 1090.80 0.73 -0.98 -0.02 0.072201 100 2905.4 1030.70 0.71 -1.77 0.00 0.097652 125 2823.4 973.30 0.69 -2.83 -0.23 0.123839 150 2742.9 918.70 0.67 -4.15 -0.74 0.150790 175 2663.9 866.50 0.65 -5.76 -1.54 0.178536 200 2586.3 816.80 0.63 [red]-7.68[/red] -2.64 0.207109 225 2510.1 769.30 0.61 -9.93 -4.06 0.236545 250 2435.0 724.00 0.59 -12.52 -5.83 0.266882 275 2361.3 680.80 0.58 -15.47 -7.97 0.298160 300 2288.8 639.70 0.56 [red]-18.82[/red] -10.50 0.330422 325 2217.6 600.50 0.54 -22.58 -13.44 0.363712 350 2147.5 563.10 0.52 -26.78 -16.82 0.398081 375 2078.8 527.60 0.51 -31.45 -20.68 0.433578 400 2011.3 494.00 0.49 [red]-36.63[/red] -25.03 0.470258 425 1945.2 462.00 0.48 -42.34 -29.93 0.508177 450 1880.4 431.70 0.46 -48.63 -35.40 0.547394 475 1817.0 403.10 0.44 -55.53 -41.48 0.587972 500 1755.1 376.10 0.43 [red]-63.09[/red] -48.22 0.629972 (Note: appears 25 yard zero here) here's my personal come-ups for my rifle: 100 - zero 200 - 1 1/2 min 300 - 3 3/4 min 350 - 4 min 400 - 5 1/2 min 450 - 7 1/2 min 500 - 9 1/4 min 550 - 11 1/2 min 600 - 12 3/4 min 700 - 17 3/4 min 800 - 23 min 900 - no target 1000 - 35 1/2 min (Note: you'll have to know what your A2 rear sight click increments are, probably 1/4 min. but may be 1/2 min) Mike PS - here's another one from here:[url]http://www.handloads.com/calc/[/url] Range Velocity Impact Drop ToF Energy Drift 0 3200 -0.5 0 0 1251 0 100 2888 0 2.02 0.1 1019 1.29 200 2604 -3.69 [red]8.23[/red] 0.21 828 3.96 300 2339 -12.56 [red]19.62[/red] 0.33 668 8.69 400 2090 -27.82 [red]37.4[/red] 0.47 533 15.82 500 1858 -51.11 [red]63.2[/red] 0.62 422 25.78 600 1644 -84.53 [red]99.14[/red] 0.79 330 39.04
Link Posted: 9/11/2003 6:14:56 AM EDT
Wow! Thanks for the quick reply, I might stand a chance of hitting something now!
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