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Long Range Hunting & Shooting
What do you think of the 6.5 WBY RPM ?
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<blockquote data-quote="25WSM" data-source="post: 1736060" data-attributes="member: 38048"><p>First off I'm not trying to argue a case. But energy of a bullet is comprised of 2 things. Weight and speed. Nothing to do with how much powder is in a case. Sure how much powder can make speeds higher with more volume. But that is not in the equation for energy.</p><p><strong>Energy</strong> = <strong>Bullet</strong> Weight x Velocity^2 / 450,437</p><p>My 24 inch creed will shoot 2950 with rl26 and 147s. </p><p>Furthermore reliable mushroom velocity is a reference to how slow a bullet can be and still be reliable.</p><p>The vast majority of people use ft pounds to decide if your bullet will kill well. 1200 ft pounds is the general recommendation for clean kills.</p><p>So according to your chart my creed has more energy than your 270 from 300 yds and further.</p><p>I'm doing my calculation from 1200 ft which is a disadvantage to me.</p><p>Even when you shoot the 150 accubonds at 2950 with a 591 bc the little creed passes it up on energy at 450 yards. If you built an 8 twist 270 and shot the 170 bergers at 2900 it would beat the creed. High bc bullets are hard to beat at long range. They are usually heavy for caliber and retain speed for longer. Now remember the energy formula. Weight and speed.</p><p>I'm not bashing the 270 here it is a very capable round. But the 6.5 and 7mm have the bc numbers. The 270 does not. The 6.5 rpm will easily out pace the 270. You should download the program Shooter. It cost like 10 bucks and is a very nice and complete ballistic program.</p><p>I shoot comp 1000 yard benchrest so I run every new bullet with several case sizes to see if it will be an advantage. I still use my 6.5 creed and a 300wsm with 210vlds. My creed has less wind drift and only 300 ft pounds less energy which is meaningless poking a hole in paper.</p><p>Shep</p></blockquote><p></p>
[QUOTE="25WSM, post: 1736060, member: 38048"] First off I'm not trying to argue a case. But energy of a bullet is comprised of 2 things. Weight and speed. Nothing to do with how much powder is in a case. Sure how much powder can make speeds higher with more volume. But that is not in the equation for energy. [B]Energy[/B] = [B]Bullet[/B] Weight x Velocity^2 / 450,437 My 24 inch creed will shoot 2950 with rl26 and 147s. Furthermore reliable mushroom velocity is a reference to how slow a bullet can be and still be reliable. The vast majority of people use ft pounds to decide if your bullet will kill well. 1200 ft pounds is the general recommendation for clean kills. So according to your chart my creed has more energy than your 270 from 300 yds and further. I'm doing my calculation from 1200 ft which is a disadvantage to me. Even when you shoot the 150 accubonds at 2950 with a 591 bc the little creed passes it up on energy at 450 yards. If you built an 8 twist 270 and shot the 170 bergers at 2900 it would beat the creed. High bc bullets are hard to beat at long range. They are usually heavy for caliber and retain speed for longer. Now remember the energy formula. Weight and speed. I'm not bashing the 270 here it is a very capable round. But the 6.5 and 7mm have the bc numbers. The 270 does not. The 6.5 rpm will easily out pace the 270. You should download the program Shooter. It cost like 10 bucks and is a very nice and complete ballistic program. I shoot comp 1000 yard benchrest so I run every new bullet with several case sizes to see if it will be an advantage. I still use my 6.5 creed and a 300wsm with 210vlds. My creed has less wind drift and only 300 ft pounds less energy which is meaningless poking a hole in paper. Shep [/QUOTE]
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What do you think of the 6.5 WBY RPM ?
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