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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
300 Norma Mag
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<blockquote data-quote="MontanaRifleman" data-source="post: 859968" data-attributes="member: 11717"><p>There are a lot of things that affect barrel life. The 300 Norma mag is maybe 3 or 4 gr less capacity than the 300 RUM. I don't know many people who will <strong>guarantee</strong> you 2500 rounds of barrel life out of a 300 RUM or even a 300 WM which has 18 water gr less capacity than the Norma. The Norma has a longer neck than the RUM, but sharper shoulder. If you blew the shoulder up to 40*, that would help a little and you would essentially have a RUM equivalent.</p><p></p><p>Headstamps don't determine barrel life. Powder, pressure, shooting rate, bore care, etc., do.</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 859968, member: 11717"] There are a lot of things that affect barrel life. The 300 Norma mag is maybe 3 or 4 gr less capacity than the 300 RUM. I don't know many people who will [B]guarantee[/B] you 2500 rounds of barrel life out of a 300 RUM or even a 300 WM which has 18 water gr less capacity than the Norma. The Norma has a longer neck than the RUM, but sharper shoulder. If you blew the shoulder up to 40*, that would help a little and you would essentially have a RUM equivalent. Headstamps don't determine barrel life. Powder, pressure, shooting rate, bore care, etc., do. [/QUOTE]
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300 Norma Mag
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