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<blockquote data-quote="Dave King" data-source="post: 1932" data-attributes="member: 3"><p>Okay</p><p></p><p> Let's take a 300 yard shot at a 20 degree angle with a 300 Win mag at 3150fps and a BC of .508 at 59 degrees and sea level.</p><p></p><p> For a flatland shot with a rifle sighted at 300 yards then a 20 degree angle shot the new distance is (300*.94=281(+-)) 281 yards and the correction is .5 MOA or about an error of 1.5 inches on the target at 281 yards, not enough to bother with.</p><p></p><p> Change to a 45 degree angle and we're shooting at about 212 yards (300*.7071=212(+-)). The correction is now 1.8 MOA and this equates to about 4 inches of error on the target at 212 yards.</p><p></p><p> For a flat shooting cartridge and a short range (relative) and small angles there's no need to get too bothered for a center mass lung shot on big game animals. Increase the distance significantly or start shooting a rainbow trajectory rifle and all bets are off.</p><p></p><p> There's a post on this site that talks about methods to determine the angle and the answer(s) usually include the MilDot Master. This handle little device will allow you to determine the angle and also give the necessary correction. It's a sliderule card type affair that weighs about the same as a few business cards (not too much extra to hump around).</p></blockquote><p></p>
[QUOTE="Dave King, post: 1932, member: 3"] Okay Let's take a 300 yard shot at a 20 degree angle with a 300 Win mag at 3150fps and a BC of .508 at 59 degrees and sea level. For a flatland shot with a rifle sighted at 300 yards then a 20 degree angle shot the new distance is (300*.94=281(+-)) 281 yards and the correction is .5 MOA or about an error of 1.5 inches on the target at 281 yards, not enough to bother with. Change to a 45 degree angle and we're shooting at about 212 yards (300*.7071=212(+-)). The correction is now 1.8 MOA and this equates to about 4 inches of error on the target at 212 yards. For a flat shooting cartridge and a short range (relative) and small angles there's no need to get too bothered for a center mass lung shot on big game animals. Increase the distance significantly or start shooting a rainbow trajectory rifle and all bets are off. There's a post on this site that talks about methods to determine the angle and the answer(s) usually include the MilDot Master. This handle little device will allow you to determine the angle and also give the necessary correction. It's a sliderule card type affair that weighs about the same as a few business cards (not too much extra to hump around). [/QUOTE]
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