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Long Range Hunting & Shooting
Rule of Thumb for Shooting Down Hill
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<blockquote data-quote="LRNut" data-source="post: 2338619" data-attributes="member: 3230"><p>I watched the first video (most of it) but from what I saw it is WRONG, because the TOF of a bullet going 500 yards (his example) is longer than one going 250 yards. Just because some guy puts out a YouTube video doesn't mean he knows what he is talking about.</p><p></p><p>Let's says you range a deer at 577 yards at a 30 deg angle. According to the math above, the true distance is 500 yards, and you hold there. Great; JBM Ballistics says you will hit 33.9 inches low at 500 yards (195 7mm Berger at 2950 zeroed at 200). However, if you put in the exact conditions, 577 yards with a 30 deg angle, you are 40.5 inches low at 577, which is nearly 7 inches different! Granted, it still hits higher than if fired over flat ground (that drop would be 50.8 inches), but if you use the equivalent horizontal range at steep angles and/or long range, you will miss.</p></blockquote><p></p>
[QUOTE="LRNut, post: 2338619, member: 3230"] I watched the first video (most of it) but from what I saw it is WRONG, because the TOF of a bullet going 500 yards (his example) is longer than one going 250 yards. Just because some guy puts out a YouTube video doesn't mean he knows what he is talking about. Let's says you range a deer at 577 yards at a 30 deg angle. According to the math above, the true distance is 500 yards, and you hold there. Great; JBM Ballistics says you will hit 33.9 inches low at 500 yards (195 7mm Berger at 2950 zeroed at 200). However, if you put in the exact conditions, 577 yards with a 30 deg angle, you are 40.5 inches low at 577, which is nearly 7 inches different! Granted, it still hits higher than if fired over flat ground (that drop would be 50.8 inches), but if you use the equivalent horizontal range at steep angles and/or long range, you will miss. [/QUOTE]
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Rule of Thumb for Shooting Down Hill
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