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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Can't get ballistic calculations to agree
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<blockquote data-quote="lisagrantb" data-source="post: 573626" data-attributes="member: 11072"><p>Ok here is the latest went to the range with the following results.</p><p>Pressure 29.8", 66 degrees, 96% humidity, 5mph wind from 280 degrees.</p><p></p><p>1) First second and third shots was at 100 yards to confirm cold bore shot and zero on a cold but fouled barrel. It shot a nice .5 MOA group right on the bulls eye.</p><p>2) One shot at 496 yards, dialed 1.7 Mills and .3 mills left for wind, dead center hit less than 1.5" from poa.</p><p>3) Dialed 3.1 mills up and .6 mills left windage, fired one shot at 700 yards and again dead on hit a little left because I wasn't watching the wind.</p><p>4) Dialed 6.6 mills and .7 left for wind for a 1057 yard shot, and again another dead on vertical hit.</p><p>5) Checked zero again with one shot and it hit within .3 moa of the shots in step 1</p><p>6) Repeated steps 2 through 4 again with the same results.</p><p>7) Dialed .4 mills up for a 267 yard shot and hit about 1" high, that could have been me.</p><p>8) Repeated step 5, now I have a .75moa 5 shot group with the center about .25" high from poa.</p><p></p><p>All in all I would call this a successful trip to the range, hit every target with a high level of accuracy (for me anyway) I was pleased. Now here is the problem. I hit the targets using the computers calculations, but this is what I had to input in the computer. MV 3388, G1 BC .675, DK .464. There is no way I'm going 3388fps and the DK is way off. I'm getting the correct answers but I know the inputs are bogus. I'm still scratching my head on this one.</p></blockquote><p></p>
[QUOTE="lisagrantb, post: 573626, member: 11072"] Ok here is the latest went to the range with the following results. Pressure 29.8”, 66 degrees, 96% humidity, 5mph wind from 280 degrees. 1) First second and third shots was at 100 yards to confirm cold bore shot and zero on a cold but fouled barrel. It shot a nice .5 MOA group right on the bulls eye. 2) One shot at 496 yards, dialed 1.7 Mills and .3 mills left for wind, dead center hit less than 1.5” from poa. 3) Dialed 3.1 mills up and .6 mills left windage, fired one shot at 700 yards and again dead on hit a little left because I wasn’t watching the wind. 4) Dialed 6.6 mills and .7 left for wind for a 1057 yard shot, and again another dead on vertical hit. 5) Checked zero again with one shot and it hit within .3 moa of the shots in step 1 6) Repeated steps 2 through 4 again with the same results. 7) Dialed .4 mills up for a 267 yard shot and hit about 1” high, that could have been me. 8) Repeated step 5, now I have a .75moa 5 shot group with the center about .25” high from poa. All in all I would call this a successful trip to the range, hit every target with a high level of accuracy (for me anyway) I was pleased. Now here is the problem. I hit the targets using the computers calculations, but this is what I had to input in the computer. MV 3388, G1 BC .675, DK .464. There is no way I’m going 3388fps and the DK is way off. I’m getting the correct answers but I know the inputs are bogus. I’m still scratching my head on this one. [/QUOTE]
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Can't get ballistic calculations to agree
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