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The Basics, Starting Out
Muzzle velocity vs barrel length
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<blockquote data-quote="WildRose" data-source="post: 1495986" data-attributes="member: 30902"><p>The faster the twist all else being equal the slower the round is going to pass down the tube.</p><p></p><p>I'm sure there's a formula somewhere that has been worked out by someone but I couldn't point you to it.</p><p></p><p>What I can say for a certainty is that the fastest barrels ever produced are all smoothbores.</p><p></p><p>We have had smoothbore cannon for over sixty years capable of over 6,000fps. None of our rifled barrels comes close.</p><p></p><p>As far as the velocity change from 1:9 to 1:10 I seriously doubt it could be more than 10-20fps.</p></blockquote><p></p>
[QUOTE="WildRose, post: 1495986, member: 30902"] The faster the twist all else being equal the slower the round is going to pass down the tube. I'm sure there's a formula somewhere that has been worked out by someone but I couldn't point you to it. What I can say for a certainty is that the fastest barrels ever produced are all smoothbores. We have had smoothbore cannon for over sixty years capable of over 6,000fps. None of our rifled barrels comes close. As far as the velocity change from 1:9 to 1:10 I seriously doubt it could be more than 10-20fps. [/QUOTE]
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The Basics, Starting Out
Muzzle velocity vs barrel length
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