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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel length and accuracy ?
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<blockquote data-quote="Mikecr" data-source="post: 1143312" data-attributes="member: 1521"><p>If a ~20" barrel was better in a broad sense then by now every new long gun would use ~20" barrels. Truth is there are prices to pay for everything.</p><p></p><p>Very short barrels are not better for larger capacity cartridges. </p><p>For one, there is more to tune than barrel tune. There is also load tune(ie optimum load), and seating tune. Now you could generalize that tune is tune -but that fails tests every time.</p><p>When you put an overly short barrel ahead of a large capacity cartridge, you're abandoning any hope of consistent load tune. All that muzzle pressure slapping the back of your Bullets is just not contributing anything good now. And it's varying about, as slow powder burning does when a lot of it isn't burned in the bore, but outside the bore.</p><p></p><p>You still have barrel tune, and seating, and the gun may shoot well enough with that. For police shooting a 308 out to maybe 80yds(the avg LE sniping dist), it makes sense to prioritize mobility over accuracy. After all, it will shoot plenty good enough there.</p><p></p><p>What I'm suggesting is that there are reasons larger cartridge guns usually come with longer barrels. It isn't just velocity.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1143312, member: 1521"] If a ~20" barrel was better in a broad sense then by now every new long gun would use ~20" barrels. Truth is there are prices to pay for everything. Very short barrels are not better for larger capacity cartridges. For one, there is more to tune than barrel tune. There is also load tune(ie optimum load), and seating tune. Now you could generalize that tune is tune -but that fails tests every time. When you put an overly short barrel ahead of a large capacity cartridge, you're abandoning any hope of consistent load tune. All that muzzle pressure slapping the back of your Bullets is just not contributing anything good now. And it's varying about, as slow powder burning does when a lot of it isn't burned in the bore, but outside the bore. You still have barrel tune, and seating, and the gun may shoot well enough with that. For police shooting a 308 out to maybe 80yds(the avg LE sniping dist), it makes sense to prioritize mobility over accuracy. After all, it will shoot plenty good enough there. What I'm suggesting is that there are reasons larger cartridge guns usually come with longer barrels. It isn't just velocity. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barrel length and accuracy ?
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