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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7-378?
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<blockquote data-quote="Long Time Long Ranger" data-source="post: 383292" data-attributes="member: 505"><p>I have not but have experience with it because a buddy I shot with in Colorado did one. Don't even go there. The 30 is way to overbore and barrels don't last long. The 7mm is way worse. I don't think he got 300 rounds through it before a bore scope showed considerable erosion. His velocities and accuracy was excellent for a little while though. His pushed 162 grain bullets 3650 fps. I built two 7mm-300 ultramags for my personal use and they didn't last very long either. I still have two 31" match barrels chambered in 7mm-300 ultramag that I haven't bothered to put on and hope to sale. The 378 case should not be taken below 338 in my opinion for any kind of barrel life.</p></blockquote><p></p>
[QUOTE="Long Time Long Ranger, post: 383292, member: 505"] I have not but have experience with it because a buddy I shot with in Colorado did one. Don't even go there. The 30 is way to overbore and barrels don't last long. The 7mm is way worse. I don't think he got 300 rounds through it before a bore scope showed considerable erosion. His velocities and accuracy was excellent for a little while though. His pushed 162 grain bullets 3650 fps. I built two 7mm-300 ultramags for my personal use and they didn't last very long either. I still have two 31" match barrels chambered in 7mm-300 ultramag that I haven't bothered to put on and hope to sale. The 378 case should not be taken below 338 in my opinion for any kind of barrel life. [/QUOTE]
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