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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Weird trajectory issue
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<blockquote data-quote="bruce_ventura" data-source="post: 1085248" data-attributes="member: 34084"><p>A zero at 100 and 200 yds is not ballistic for that round. Here is the drop table for a 225 gr AB @ 2770 fps @ sea level, showing good agreement with your drop at 200 and 300 yds, but definitely not at 100 yds. Impacts at 100 yds should be 1.7-2" below point of aim. </p><p></p><p> Range </p><p>(yards) Drop</p><p>(in) Drop</p><p>(moa) Wind.</p><p>(in) Wind.</p><p>(moa) Veloc. </p><p>(fps) Energy </p><p>(ft-lbs) Time</p><p>(sec)</p><p> 0 </p><p>&darr;</p><p>-1.62 0.00 0.00 0.00 2777 3853 0.00 </p><p> 25 -0.30 -1.15 -0.00 -0.01 2722 3702 0.03 </p><p> 50 0.72 1.38 -0.01 -0.03 2668 3555 0.06 </p><p> 75 1.44 1.84 -0.05 -0.06 2614 3413 0.08 </p><p> 100 1.85 1.76 -0.11 -0.10 2561 3275 0.11 </p><p> 125 1.92 1.47 -0.22 -0.17 2508 3142 0.14 </p><p> 150 1.64 1.05 -0.38 -0.24 2456 3014 0.17 </p><p> 175 1.01 0.55 -0.61 -0.33 2405 2889 0.20 </p><p> 200 </p><p>&oplus;</p><p>-0.00 -0.00 -0.92 -0.44 2354 2768 0.23 </p><p> 225 -1.40 -0.59 -1.33 -0.56 2304 2652 0.27 </p><p> 247 </p><p>&uarr;</p><p>-3.05 -1.18 -1.80 -0.69 2260 2548 0.30 </p><p> 250 -3.21 -1.23 -1.85 -0.71 2254 2539 0.30 </p><p> 275 -5.45 -1.89 -2.49 -0.87 2206 2430 0.33 </p><p> 300 -8.14 -2.59 -3.27 -1.04 2157 2324 0.37</p></blockquote><p></p>
[QUOTE="bruce_ventura, post: 1085248, member: 34084"] A zero at 100 and 200 yds is not ballistic for that round. Here is the drop table for a 225 gr AB @ 2770 fps @ sea level, showing good agreement with your drop at 200 and 300 yds, but definitely not at 100 yds. Impacts at 100 yds should be 1.7-2" below point of aim. Range (yards) Drop (in) Drop (moa) Wind. (in) Wind. (moa) Veloc. (fps) Energy (ft-lbs) Time (sec) 0 ↓ -1.62 0.00 0.00 0.00 2777 3853 0.00 25 -0.30 -1.15 -0.00 -0.01 2722 3702 0.03 50 0.72 1.38 -0.01 -0.03 2668 3555 0.06 75 1.44 1.84 -0.05 -0.06 2614 3413 0.08 100 1.85 1.76 -0.11 -0.10 2561 3275 0.11 125 1.92 1.47 -0.22 -0.17 2508 3142 0.14 150 1.64 1.05 -0.38 -0.24 2456 3014 0.17 175 1.01 0.55 -0.61 -0.33 2405 2889 0.20 200 ⊕ -0.00 -0.00 -0.92 -0.44 2354 2768 0.23 225 -1.40 -0.59 -1.33 -0.56 2304 2652 0.27 247 ↑ -3.05 -1.18 -1.80 -0.69 2260 2548 0.30 250 -3.21 -1.23 -1.85 -0.71 2254 2539 0.30 275 -5.45 -1.89 -2.49 -0.87 2206 2430 0.33 300 -8.14 -2.59 -3.27 -1.04 2157 2324 0.37 [/QUOTE]
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Weird trajectory issue
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