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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bucking the wind better BC or weight ?
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<blockquote data-quote="Mysticplayer" data-source="post: 36486" data-attributes="member: 8947"><p>trader, I would go with the 30cal and a 210 or heavier bullet. At long range, impact vel drops way off. What does the damage is bullet diameter and momentum. You still need to hit fast enough to get some expansion.</p><p></p><p>When bullets slow down, the biggest diameter heaviest bullet is going to have a larger effect on that animal.</p><p></p><p>The difference in paper ballistics is slim. You still have to dope over 6ft of drift. A few more inches isn't going to change much. However, the heavier 30cal will make a stronger impression on impact.</p><p></p><p>All you have to do is go out and shoot milk jugs or water soaked phone books. It will be really easy to see the difference.</p><p></p><p>I have shot 165gr bullets out of 300Wby at 750yds at a dirt backstop. You could see the puff of dust through the scope. Hard to see with the naked eye.</p><p></p><p>My buddy would shoot his 45/70 and 500gr bullets at a whopping 1150fps. We didn't need a scope to see where the bullets landed. It was very obvious.</p><p></p><p>Now go heavy AND fast. YUMMM...</p><p></p><p>RBrowning, if you made two bullets of identical shape from your different materials/weight, the heavier bullet would have a higher BC because inertia is part of wind drift.</p><p></p><p>A heavier object will be less effected by wind then a lighter one. That assumes that they are both launched with the same velocity.</p><p></p><p>To get two bullets of the same BC from different materials or calibres, would require different shapes. </p><p></p><p>Bullets of the same BC will travel through the air the same ie a 6.5 bullet with a BC of 0.65 will drift the same as a 30cal bullet with that BC. Despite a huge difference in weight. Assume same muzzle velocity.</p><p></p><p>Jerry</p></blockquote><p></p>
[QUOTE="Mysticplayer, post: 36486, member: 8947"] trader, I would go with the 30cal and a 210 or heavier bullet. At long range, impact vel drops way off. What does the damage is bullet diameter and momentum. You still need to hit fast enough to get some expansion. When bullets slow down, the biggest diameter heaviest bullet is going to have a larger effect on that animal. The difference in paper ballistics is slim. You still have to dope over 6ft of drift. A few more inches isn't going to change much. However, the heavier 30cal will make a stronger impression on impact. All you have to do is go out and shoot milk jugs or water soaked phone books. It will be really easy to see the difference. I have shot 165gr bullets out of 300Wby at 750yds at a dirt backstop. You could see the puff of dust through the scope. Hard to see with the naked eye. My buddy would shoot his 45/70 and 500gr bullets at a whopping 1150fps. We didn't need a scope to see where the bullets landed. It was very obvious. Now go heavy AND fast. YUMMM... RBrowning, if you made two bullets of identical shape from your different materials/weight, the heavier bullet would have a higher BC because inertia is part of wind drift. A heavier object will be less effected by wind then a lighter one. That assumes that they are both launched with the same velocity. To get two bullets of the same BC from different materials or calibres, would require different shapes. Bullets of the same BC will travel through the air the same ie a 6.5 bullet with a BC of 0.65 will drift the same as a 30cal bullet with that BC. Despite a huge difference in weight. Assume same muzzle velocity. Jerry [/QUOTE]
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Bucking the wind better BC or weight ?
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