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Hunting
The Basics, Starting Out
need your opinion on 270 cal.
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<blockquote data-quote="WildcatB" data-source="post: 198982" data-attributes="member: 10379"><p><strong>running the numbers on JBM....</strong></p><p></p><p>Accurate Powder lists a load for a 150gr sierra sbt @ 3000 ft/sec... if you could get that velocity out of a 150gr sst which has a .525 bc. you'd have:</p><p></p><p><strong>At sea level</strong> - 1000 foot pounds of energy at <strong>750 yards </strong> </p><p><strong>At 5000 ft. elevation</strong> - 1000 foot pounds of energy at <strong>900 yards</strong></p><p><strong>At 7000 ft. elevation</strong> - 1000 foot pounds of energy at <strong>1000 yards</strong></p><p><strong>At 10000ft. elevation</strong> - 1000 foot pounds of energy at <strong>1100 yards</strong></p><p></p><p>In my opinion 1000 foot pounds is a conservative general minimum for shooting deer. It defiantly can be done with less. I think the 3000 ft/sec. data was from a 24" barrel. You might be able to get higher than that with your 26" barrel.</p><p></p><p>Here's a link to the ballistics calculator I used. <a href="http://www.eskimo.com/~jbm/calculations/traj_basic/traj_basic.html" target="_blank">JBM - Calculations - Trajectory (Basic)</a></p></blockquote><p></p>
[QUOTE="WildcatB, post: 198982, member: 10379"] [b]running the numbers on JBM....[/b] Accurate Powder lists a load for a 150gr sierra sbt @ 3000 ft/sec... if you could get that velocity out of a 150gr sst which has a .525 bc. you'd have: [B]At sea level[/B] - 1000 foot pounds of energy at [B]750 yards [/B] [B]At 5000 ft. elevation[/B] - 1000 foot pounds of energy at [B]900 yards[/B] [B]At 7000 ft. elevation[/B] - 1000 foot pounds of energy at [B]1000 yards[/B] [B]At 10000ft. elevation[/B] - 1000 foot pounds of energy at [B]1100 yards[/B] In my opinion 1000 foot pounds is a conservative general minimum for shooting deer. It defiantly can be done with less. I think the 3000 ft/sec. data was from a 24" barrel. You might be able to get higher than that with your 26" barrel. Here's a link to the ballistics calculator I used. [url=http://www.eskimo.com/~jbm/calculations/traj_basic/traj_basic.html]JBM - Calculations - Trajectory (Basic)[/url] [/QUOTE]
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need your opinion on 270 cal.
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