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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
7mm barrel life?
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<blockquote data-quote="tresmon" data-source="post: 459664" data-attributes="member: 12397"><p>A 7mmRM will shoot little 160's 3000f/sec +++.</p><p></p><p>A 7wsm prolly will too. But I'm told barrel life is better with a RM over a WSM.</p><p></p><p></p><p></p><p>Just like a engine, the faster you go the more it costs in every department, wear & tear, fueling it, etc.</p><p></p><p>Barrel life should be at least 1200 rounds in a 7mmRM if you shoot slow and keep the barrel clean and don't get it hot.</p><p></p><p>7 RUM barrel life is just stupid. STW not really any better.</p><p></p><p>If I wanted to shoot 160's @ 3000 and get all the barrel life I could, I'd go 280 Ackley. Sierra list max loads in a 26" barrel at 2950fps, and I find the Sierra load manual to be a little conservative on the top end. the 280 Ackley is pretty common, loading dies are available off the shelf. It's the fastest non magnum 7mm.</p><p>On your list of cartridges, the 280 Ackley Improved would fit between .284 Win & 7Wsm.</p><p></p><p>The more powder you burn per shot, the more barrel you burn per shot.</p><p></p><p>What are you after? If your looking to do long range hunting per this website, you'd be better off to use the heaviest 7mm bullets as they would be more forgiving in cross winds & have more down range energy...</p><p></p><p>FWIW,</p><p>T</p></blockquote><p></p>
[QUOTE="tresmon, post: 459664, member: 12397"] A 7mmRM will shoot little 160's 3000f/sec +++. A 7wsm prolly will too. But I'm told barrel life is better with a RM over a WSM. Just like a engine, the faster you go the more it costs in every department, wear & tear, fueling it, etc. Barrel life should be at least 1200 rounds in a 7mmRM if you shoot slow and keep the barrel clean and don't get it hot. 7 RUM barrel life is just stupid. STW not really any better. If I wanted to shoot 160's @ 3000 and get all the barrel life I could, I'd go 280 Ackley. Sierra list max loads in a 26" barrel at 2950fps, and I find the Sierra load manual to be a little conservative on the top end. the 280 Ackley is pretty common, loading dies are available off the shelf. It's the fastest non magnum 7mm. On your list of cartridges, the 280 Ackley Improved would fit between .284 Win & 7Wsm. The more powder you burn per shot, the more barrel you burn per shot. What are you after? If your looking to do long range hunting per this website, you'd be better off to use the heaviest 7mm bullets as they would be more forgiving in cross winds & have more down range energy... FWIW, T [/QUOTE]
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7mm barrel life?
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