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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.284 win or 7mm-08 barrel life
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<blockquote data-quote="LouBoyd" data-source="post: 300939" data-attributes="member: 9253"><p>"Why would the 7-08 have a shorter life?"</p><p></p><p>In the 7mm08 approximately the same mass of powder is forced though a bore with 18% less area at about the same temperature as the 308. (1-(308/284)^2)*100 That produces higher surface temperature in the throat area resulting in shorter barrel life. The effect isn't linear. For a SWAG I'd say the 308 would give 25% more barrel life.</p></blockquote><p></p>
[QUOTE="LouBoyd, post: 300939, member: 9253"] "Why would the 7-08 have a shorter life?" In the 7mm08 approximately the same mass of powder is forced though a bore with 18% less area at about the same temperature as the 308. (1-(308/284)^2)*100 That produces higher surface temperature in the throat area resulting in shorter barrel life. The effect isn't linear. For a SWAG I'd say the 308 would give 25% more barrel life. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.284 win or 7mm-08 barrel life
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