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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
One shot 1000 yards ballistic chart
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<blockquote data-quote="Greyfox" data-source="post: 1062967" data-attributes="member: 10291"><p>The simplest method I have used successfully with my 6.5-284 out to 1000 yards is to have either a drop chart or calibrated turret that is calculated for the average altitude, temperature, and 55% humidity out to 1000 yards in the area I plan to hunt. After I confirm range, temperature, altitude, I will make click adjustments at the measured range if required. 1 click for each 20 degree change in temperature up to 700 yards, two clicks to 1000 yards. 1 click for each 1500 feet altitude out to 700 yards, 2 clicks for each 1500 feet at 700-1000 yards. Before I used my preferred yardage turret, I found that after a season, I had memorized the the drops and didn't need a chart. It may seem like a lot to memorize but if you think in terms of "come ups" for each 100 yards of range in MOA it much easier than it seems. Same for windage. I use a formula that I can work out faster in my head that going to a chart. </p><p></p><p>(wind speed x yardage/100) / 20</p><p></p><p>Example for an 8 mph wind at 400 yards: 8 (mph wind speed) x 5 (500 yard range) = 40/ 20(cartridge factor) = 2 MOA wind correction.</p><p></p><p></p><p>I use a cartridge factor of 20 for my 6.5x284 and 300 WM. This formula matches my ballistic calculator.out to 1000 yards. For my 308 out to 600 yards I used a factor of 15. If you prefer to not use this method, windaus directions are easily added to the drop chart or turret.</p></blockquote><p></p>
[QUOTE="Greyfox, post: 1062967, member: 10291"] The simplest method I have used successfully with my 6.5-284 out to 1000 yards is to have either a drop chart or calibrated turret that is calculated for the average altitude, temperature, and 55% humidity out to 1000 yards in the area I plan to hunt. After I confirm range, temperature, altitude, I will make click adjustments at the measured range if required. 1 click for each 20 degree change in temperature up to 700 yards, two clicks to 1000 yards. 1 click for each 1500 feet altitude out to 700 yards, 2 clicks for each 1500 feet at 700-1000 yards. Before I used my preferred yardage turret, I found that after a season, I had memorized the the drops and didn't need a chart. It may seem like a lot to memorize but if you think in terms of "come ups" for each 100 yards of range in MOA it much easier than it seems. Same for windage. I use a formula that I can work out faster in my head that going to a chart. (wind speed x yardage/100) / 20 Example for an 8 mph wind at 400 yards: 8 (mph wind speed) x 5 (500 yard range) = 40/ 20(cartridge factor) = 2 MOA wind correction. I use a cartridge factor of 20 for my 6.5x284 and 300 WM. This formula matches my ballistic calculator.out to 1000 yards. For my 308 out to 600 yards I used a factor of 15. If you prefer to not use this method, windaus directions are easily added to the drop chart or turret. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
One shot 1000 yards ballistic chart
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