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The Basics, Starting Out
Need Help for long range
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<blockquote data-quote="Engineering101" data-source="post: 774831" data-attributes="member: 63138"><p><span style="font-size: 12px">top end hunter</span></p><p> </p><p><span style="font-family: 'Verdana'"><span style="font-size: 12px">Barometric pressure varies with altitude not to mention weather conditions. Just looking at altitude, at sea level bp is 29.92" Hg while at 5,000 feet it is 24.89" Hg. Your bullet slows down much faster at sea level than it would at 5,000 feet. The bullet you are using has a BC of 0.375 and with a 200 yard zero, the drop at 1,000 yards assuming a 3,800 fps muzzle velocity while at sea level is 204 inches and it is 157 inches at 5,000 feet elevation. That is a difference of 1.2 meters just from changing the elevation.</span></span></p><p> </p><p><span style="font-family: 'Verdana'"><span style="font-size: 12px">If you have a Kestrel weather meter and a ballistic program running on your iPod or iPhone you read the barometric pressure, temperature, humidity and put that in your ballistics program along with bullet BC and muzzle velocity and it tells you how many MOA to dial up your scope. You make that adjustment, aim dead on, pull the trigger and dinner is served. This works at any altitude, in any weather. </span></span></p><p> </p><p><span style="font-family: 'Verdana'"><span style="font-size: 12px">The Kestel will also measure wind velocity and you can then similarly dial in corrections for windage. Furthermore, my iPod also has an accelerometer which allows my ballistics program to measure the angle of the shot, either up or down, if I just point my iPod at the target.</span></span></p><p> </p><p><span style="font-family: 'Verdana'"><span style="font-size: 12px">I used to think 600 yards was a long shot. Using these methods it is not even interesting anymore. You just don't miss. Of course if you have wind, it is a whole different story but the wind meter helps figure that out also. </span></span></p></blockquote><p></p>
[QUOTE="Engineering101, post: 774831, member: 63138"] [SIZE=3]top end hunter[/SIZE] [SIZE=3][/SIZE] [FONT=Verdana][SIZE=3]Barometric pressure varies with altitude not to mention weather conditions. Just looking at altitude, at sea level bp is 29.92“ Hg while at 5,000 feet it is 24.89“ Hg. Your bullet slows down much faster at sea level than it would at 5,000 feet. The bullet you are using has a BC of 0.375 and with a 200 yard zero, the drop at 1,000 yards assuming a 3,800 fps muzzle velocity while at sea level is 204 inches and it is 157 inches at 5,000 feet elevation. That is a difference of 1.2 meters just from changing the elevation.[/SIZE][/FONT] [FONT=Verdana][SIZE=3] [/SIZE][/FONT] [FONT=Verdana][SIZE=3]If you have a Kestrel weather meter and a ballistic program running on your iPod or iPhone you read the barometric pressure, temperature, humidity and put that in your ballistics program along with bullet BC and muzzle velocity and it tells you how many MOA to dial up your scope. You make that adjustment, aim dead on, pull the trigger and dinner is served. This works at any altitude, in any weather. [/SIZE][/FONT] [FONT=Verdana][SIZE=3] [/SIZE][/FONT] [FONT=Verdana][SIZE=3]The Kestel will also measure wind velocity and you can then similarly dial in corrections for windage. Furthermore, my iPod also has an accelerometer which allows my ballistics program to measure the angle of the shot, either up or down, if I just point my iPod at the target.[/SIZE][/FONT] [FONT=Verdana][SIZE=3] [/SIZE][/FONT] [FONT=Verdana][SIZE=3]I used to think 600 yards was a long shot. Using these methods it is not even interesting anymore. You just don’t miss. Of course if you have wind, it is a whole different story but the wind meter helps figure that out also. [/SIZE][/FONT] [/QUOTE]
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