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Long Range Hunting & Shooting
7mm rem mag. question
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<blockquote data-quote="liltank" data-source="post: 343037" data-attributes="member: 13275"><p>Welcome to LRH! For shooting those distances I would lean toward the 175's. The 150's would work, but because of the terrain, I am guessing wind could be a real problem. The heavier bullet will allow for better penetration and buck the wind better. </p><p></p><p>As far as your Max PB range, that is determined by your velocity. Without knowing the velocity and BC of your bullet, that is a hard figure to come up with. I could guess, but it probably wouldn't be right. The best I can figure is the following= Maximum PBR: 345 yd Maximum PBR Zero: 292 yd </p><p></p><p>I got this info comparing other manufacturers against one another. The avg. velocity is around 2850fps and the bullet is a flat base pointed soft point 175grn Speer. There ballistic coefficients were all about .465 to .462 so those are the numbers I crunched with JBM Calculations. I used an elevation of 3000 ft. but if you go higher, to say 5000 or 8000 ft. above see level that will get longer. At 8000ft your PBR changes to 351yrds max. and 297 zero range. The best thing you could do is go out and shoot the distances that you are planning on hunting and develop your own dope for elevations you might be hunting. </p><p></p><p>Hope this helps,</p><p>Tank</p></blockquote><p></p>
[QUOTE="liltank, post: 343037, member: 13275"] Welcome to LRH! For shooting those distances I would lean toward the 175's. The 150's would work, but because of the terrain, I am guessing wind could be a real problem. The heavier bullet will allow for better penetration and buck the wind better. As far as your Max PB range, that is determined by your velocity. Without knowing the velocity and BC of your bullet, that is a hard figure to come up with. I could guess, but it probably wouldn't be right. The best I can figure is the following= Maximum PBR: 345 yd Maximum PBR Zero: 292 yd I got this info comparing other manufacturers against one another. The avg. velocity is around 2850fps and the bullet is a flat base pointed soft point 175grn Speer. There ballistic coefficients were all about .465 to .462 so those are the numbers I crunched with JBM Calculations. I used an elevation of 3000 ft. but if you go higher, to say 5000 or 8000 ft. above see level that will get longer. At 8000ft your PBR changes to 351yrds max. and 297 zero range. The best thing you could do is go out and shoot the distances that you are planning on hunting and develop your own dope for elevations you might be hunting. Hope this helps, Tank [/QUOTE]
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