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Long Range Hunting & Shooting
Hunting without trajectory validation up to 600 meters possible?
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<blockquote data-quote="User4302021" data-source="post: 1599912" data-attributes="member: 105322"><p>As others have said, it is definitely possible to 600 yards (meters) with something like a 300 winmag.</p><p></p><p>Out to this distance, the main determiner of trajectory is velocity. At this distance you can have a very wide discrepency in BC, and as long as the velocity is spot on, you will be very close (as in within a very few inches or cm) to actual trajectory.</p><p></p><p>The BC's of bullets are published and more than accurate enough for this distance. So you won't have to true the BC or any of that.</p><p></p><p><strong><em><u>The main issue you will run into is obtaining that accurate velocity</u></em></strong>. You will absolutely need that reliable chronograph. The velocity printed on the box should be regarded as nothing more than advertising.</p><p></p><p>Here is an example run on JBM Ballistics:180 grain Accubond @ 3000 fps, @ sea level.</p><p>600 meters @ a .507 advertised BC</p><p>Drop = 92.4 in / 234.6 cm</p><p> 13.4 moa / 3.9 mil</p><p></p><p>600 meters @ a .557 BC</p><p>Drop = 88.8 in / 225.6 cm</p><p> 12.9 moa / 3.8 mil</p><p></p><p>So you see that even a rather large BC discrepency has very little effect at this range with this caliber. It amounts to 3.5 inches or 9 cm. Or in angular measurements 0.5 moa or 0.1 mils. But that velocity has to be correct.</p></blockquote><p></p>
[QUOTE="User4302021, post: 1599912, member: 105322"] As others have said, it is definitely possible to 600 yards (meters) with something like a 300 winmag. Out to this distance, the main determiner of trajectory is velocity. At this distance you can have a very wide discrepency in BC, and as long as the velocity is spot on, you will be very close (as in within a very few inches or cm) to actual trajectory. The BC's of bullets are published and more than accurate enough for this distance. So you won't have to true the BC or any of that. [B][I][U]The main issue you will run into is obtaining that accurate velocity[/U][/I][/B]. You will absolutely need that reliable chronograph. The velocity printed on the box should be regarded as nothing more than advertising. Here is an example run on JBM Ballistics:180 grain Accubond @ 3000 fps, @ sea level. 600 meters @ a .507 advertised BC Drop = 92.4 in / 234.6 cm 13.4 moa / 3.9 mil 600 meters @ a .557 BC Drop = 88.8 in / 225.6 cm 12.9 moa / 3.8 mil So you see that even a rather large BC discrepency has very little effect at this range with this caliber. It amounts to 3.5 inches or 9 cm. Or in angular measurements 0.5 moa or 0.1 mils. But that velocity has to be correct. [/QUOTE]
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Hunting without trajectory validation up to 600 meters possible?
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