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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Why the 7mm Rem Mag?
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<blockquote data-quote="BrentM" data-source="post: 2296525" data-attributes="member: 61747"><p>It's seem pretty straight forward. For caliber and weight the 7 has higher bc. Clearly external ballistics tells us the a higher bc bullet in a lower weight with similar case volume is going to net a higher velocity and therefore better performance for trajectory and deflection. The terminal performance is a different study as you then have to look at the range at which you can honestly deploy a wez hit factor of 90% or better. At this point the terminal performance will be based on retained down range energy and sectional density for desired effect. In many cases a 180 7 vs a 210 30 the net affect is almost the same at the terminal level but the external level the 7 generally has less drop and drift. When hedging a bet against wind calls I'd lean toward the less drift the better. I also tend to lean toward the cartridge that helps me view my impact. I have had both and prefer the 7's over the 30's but having said that, I never shoot them when I have plethora of 6.5's at my disposal.</p></blockquote><p></p>
[QUOTE="BrentM, post: 2296525, member: 61747"] It's seem pretty straight forward. For caliber and weight the 7 has higher bc. Clearly external ballistics tells us the a higher bc bullet in a lower weight with similar case volume is going to net a higher velocity and therefore better performance for trajectory and deflection. The terminal performance is a different study as you then have to look at the range at which you can honestly deploy a wez hit factor of 90% or better. At this point the terminal performance will be based on retained down range energy and sectional density for desired effect. In many cases a 180 7 vs a 210 30 the net affect is almost the same at the terminal level but the external level the 7 generally has less drop and drift. When hedging a bet against wind calls I'd lean toward the less drift the better. I also tend to lean toward the cartridge that helps me view my impact. I have had both and prefer the 7's over the 30's but having said that, I never shoot them when I have plethora of 6.5's at my disposal. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Why the 7mm Rem Mag?
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