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Long Range Hunting & Shooting
Hard to believe part 2 the answer
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<blockquote data-quote="longestrange" data-source="post: 2090919" data-attributes="member: 75265"><p>Despite the much lower mass of Mars the diameter is smaller resulting in about 1/3 of earth's gravity. That would significantly reduce bullet drop at longer distances. The atmospheric pressure is only about .09 psi depending on elevation. Wind speed averages about 10-15 mph depending on the season but the extreme low pressure/density of the atmosphere would result in almost zero wind drift and very low loss of velocity. Low density air results in low Reynolds numbers, dramatically reducing drag below mach 0.8 or so. But there is the issue of Mach numbers. Mach numbers will increase with decreasing pressure at the same ground speed. Then again, low temperatures on Mars will increase the velocity over ground to obtain Mach 1.0. Another variable would be the composition of the 'air' - mostly CO2. All in all, as long as you don't cross a mach boundary, 850 yd dogs in 30mph winds would be trivial.</p></blockquote><p></p>
[QUOTE="longestrange, post: 2090919, member: 75265"] Despite the much lower mass of Mars the diameter is smaller resulting in about 1/3 of earth's gravity. That would significantly reduce bullet drop at longer distances. The atmospheric pressure is only about .09 psi depending on elevation. Wind speed averages about 10-15 mph depending on the season but the extreme low pressure/density of the atmosphere would result in almost zero wind drift and very low loss of velocity. Low density air results in low Reynolds numbers, dramatically reducing drag below mach 0.8 or so. But there is the issue of Mach numbers. Mach numbers will increase with decreasing pressure at the same ground speed. Then again, low temperatures on Mars will increase the velocity over ground to obtain Mach 1.0. Another variable would be the composition of the 'air' - mostly CO2. All in all, as long as you don't cross a mach boundary, 850 yd dogs in 30mph winds would be trivial. [/QUOTE]
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Hard to believe part 2 the answer
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