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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
What kills barrel life on bigger magnums?
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<blockquote data-quote="Fiftydriver" data-source="post: 891788" data-attributes="member: 10"><p>I would agree that the lower velocity rounds do seem to offer longer barrel life but again, it has more to do with actual bore temps then anything else.</p><p> </p><p> Slower rounds tend to use powders that generally burn mostly in the case compared to lower expansion ratio designs where a significant amount of the powder charge is burnt in the throat and first portion of the barrel. When this happens, it simply takes longer for the bore temp to cool off.</p><p> </p><p> Have tested different neck length designs, shoulder angle designs and I have never seen any of these make any real difference to throat life if the barrel was kept cool.</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 891788, member: 10"] I would agree that the lower velocity rounds do seem to offer longer barrel life but again, it has more to do with actual bore temps then anything else. Slower rounds tend to use powders that generally burn mostly in the case compared to lower expansion ratio designs where a significant amount of the powder charge is burnt in the throat and first portion of the barrel. When this happens, it simply takes longer for the bore temp to cool off. Have tested different neck length designs, shoulder angle designs and I have never seen any of these make any real difference to throat life if the barrel was kept cool. [/QUOTE]
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What kills barrel life on bigger magnums?
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