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<blockquote data-quote="Augustus" data-source="post: 725782" data-attributes="member: 10142"><p>I am shooting the 300 SMK at 2850 from my Edge. The method works great on this class of cartridge from 600 tp 1100 yds on come-ups and the windage works from 200 to 900 yds. these distances are very simple to do. </p><p></p><p>For come-ups 600 to 1100 yds the trick is simply range minus three. 600 yds is 3 mils, 750 yds would be 4.5.mils, 815yds is 5.15 mils etc. You can use Range minus two on distances 200 to 400 and I just memorize 500 at 2.50 mils. You can study a ballistic computer range card and learn to tweak this method if you need more precision.</p><p></p><p>Windage is simply distance times wind. 8 mph wind at 800 yds would be .64 mils, 7 mph wind at 600 yds would be .42 mils and so on. This works very nice out to about 800 yds, out passed that distance you need to add an extra .2 mils.</p><p></p><p>You can round the distance to the nearest hundred yds to figure the wind. It's easier to multiply single digit numbers in your head.</p><p></p><p></p><p>Now for the 308 fans, from 300 to 650 yds the 175 SMK at 2700 fps can be figured with Range minus two. 625 yds is 4.25 mils, 410 yds is 2.10 mils etc.</p><p></p><p>The wind can be figured by wind times distance times 2. Example, 500 yds in a 6 mph wind would require .60 mils, 600 yds in 7 mph wind needs .84 mils</p><p></p><p>Anyway that's the basics, if you are shooting one rifle with one load you can become quite efficient by learning to add a little and take a little away as the system starts to deviate from ballistic program.</p><p></p><p>I hope That wasn't too confusing, the best way to practice is to enter your parameters in your program then go to the range card and practice figuring the solutions in your head for various distances.</p><p></p><p>If you have a ballistic calculator and have time to use it by all means do so, if you forgot it at the truck or the batteries went south try this.</p></blockquote><p></p>
[QUOTE="Augustus, post: 725782, member: 10142"] I am shooting the 300 SMK at 2850 from my Edge. The method works great on this class of cartridge from 600 tp 1100 yds on come-ups and the windage works from 200 to 900 yds. these distances are very simple to do. For come-ups 600 to 1100 yds the trick is simply range minus three. 600 yds is 3 mils, 750 yds would be 4.5.mils, 815yds is 5.15 mils etc. You can use Range minus two on distances 200 to 400 and I just memorize 500 at 2.50 mils. You can study a ballistic computer range card and learn to tweak this method if you need more precision. Windage is simply distance times wind. 8 mph wind at 800 yds would be .64 mils, 7 mph wind at 600 yds would be .42 mils and so on. This works very nice out to about 800 yds, out passed that distance you need to add an extra .2 mils. You can round the distance to the nearest hundred yds to figure the wind. It's easier to multiply single digit numbers in your head. Now for the 308 fans, from 300 to 650 yds the 175 SMK at 2700 fps can be figured with Range minus two. 625 yds is 4.25 mils, 410 yds is 2.10 mils etc. The wind can be figured by wind times distance times 2. Example, 500 yds in a 6 mph wind would require .60 mils, 600 yds in 7 mph wind needs .84 mils Anyway that's the basics, if you are shooting one rifle with one load you can become quite efficient by learning to add a little and take a little away as the system starts to deviate from ballistic program. I hope That wasn't too confusing, the best way to practice is to enter your parameters in your program then go to the range card and practice figuring the solutions in your head for various distances. If you have a ballistic calculator and have time to use it by all means do so, if you forgot it at the truck or the batteries went south try this. [/QUOTE]
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