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Rifles, Reloading, Optics, Equipment
Gunsmithing
How close can flutes be to muzzle?
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<blockquote data-quote="J E Custom" data-source="post: 1079115" data-attributes="member: 2736"><p>Barrel failures normally only come one way, Catastrophic, there is no way to know when you are near failure or how close you came as long as it doesn't fail.</p><p></p><p>Fluting a barrel all the way to the end creates stress riser's that could cause failures due to hoop</p><p>strength loss. How much is two much ? it is anybody's guess, The non fluted barrel prevents a failure from starting (In Theory) at the end of the barrel Just like when you drill a hole at the end of a crack to prevent the crack from growing anymore.</p><p></p><p>On the barrels I have seen that failed, (That were not overloaded)they all were small diameter and they failure started at the muzzle and followed the rifling (Fluting acts the same way only on the outside) Bullets that claim to have perfect expansion of the bullet nose, normally have strait groves inside to control the petal size and number by designing in these stress risers where they fail very evenly and informally. </p><p></p><p>I would think that any non fluted portion on the end would be good to prevent failure.</p><p></p><p>Also if you notice, no barrel maker flutes where the chamber is. Even though it is a much higher pressure area it is considered taboo .</p><p></p><p>I don't think anyone can tell/predict how much is enough and probably wouldn't tell even if they knew so go with the barrel makers when you order a fluted barrel, they always ask, What is the finish length so head there advice.</p><p></p><p>1" of barrel adds almost nothing to the weight so if its not a length issue I would leave it alone.</p><p></p><p>Just My Opinion</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1079115, member: 2736"] Barrel failures normally only come one way, Catastrophic, there is no way to know when you are near failure or how close you came as long as it doesn't fail. Fluting a barrel all the way to the end creates stress riser's that could cause failures due to hoop strength loss. How much is two much ? it is anybody's guess, The non fluted barrel prevents a failure from starting (In Theory) at the end of the barrel Just like when you drill a hole at the end of a crack to prevent the crack from growing anymore. On the barrels I have seen that failed, (That were not overloaded)they all were small diameter and they failure started at the muzzle and followed the rifling (Fluting acts the same way only on the outside) Bullets that claim to have perfect expansion of the bullet nose, normally have strait groves inside to control the petal size and number by designing in these stress risers where they fail very evenly and informally. I would think that any non fluted portion on the end would be good to prevent failure. Also if you notice, no barrel maker flutes where the chamber is. Even though it is a much higher pressure area it is considered taboo . I don't think anyone can tell/predict how much is enough and probably wouldn't tell even if they knew so go with the barrel makers when you order a fluted barrel, they always ask, What is the finish length so head there advice. 1" of barrel adds almost nothing to the weight so if its not a length issue I would leave it alone. Just My Opinion J E CUSTOM [/QUOTE]
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How close can flutes be to muzzle?
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