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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Help me decide short barrel 6mm
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<blockquote data-quote="Mikecr" data-source="post: 2826976" data-attributes="member: 1521"><p>I was just hoping to get him thinking (for himself) about why this would be.</p><p>A spoon-fed answer, even while correct, is often less helpful..</p><p>But to seem less offensive I'll add that an 18" barrel is all wrong for use of a heavy for cal bullet (115DTAC).</p><p></p><p>You have to use slow powder with heavy bullets, and he will not have the barrel length to burn it.</p><p>This raises muzzle pressures to such an extreme that you can generate a secondary pressure peaks (throughout the barrel) that can be considerably higher than the primary peak. It's analogous to undercharge detonations.</p><p>This can lead to early pressure problems, poor brass life, and accuracy issues.</p><p>It would be different if he was going subsonic, but then he wouldn't need overbore case capacities (like 243AI) to do that.</p><p>In summary, If extremely short barrels worked for ****, we would all be using them by now.</p></blockquote><p></p>
[QUOTE="Mikecr, post: 2826976, member: 1521"] I was just hoping to get him thinking (for himself) about why this would be. A spoon-fed answer, even while correct, is often less helpful.. But to seem less offensive I'll add that an 18" barrel is all wrong for use of a heavy for cal bullet (115DTAC). You have to use slow powder with heavy bullets, and he will not have the barrel length to burn it. This raises muzzle pressures to such an extreme that you can generate a secondary pressure peaks (throughout the barrel) that can be considerably higher than the primary peak. It's analogous to undercharge detonations. This can lead to early pressure problems, poor brass life, and accuracy issues. It would be different if he was going subsonic, but then he wouldn't need overbore case capacities (like 243AI) to do that. In summary, If extremely short barrels worked for ****, we would all be using them by now. [/QUOTE]
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Help me decide short barrel 6mm
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