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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
High Velocity Throat Erosion
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<blockquote data-quote="nralifer" data-source="post: 2594255" data-attributes="member: 94556"><p>You pose an interesting question that I have commented on before. Maybe you have some data, but all should realize that the 308 Win is one of the most efficient cartridges out there. It has a very long throat life. The only conclusive way to answer the question is to actually test 2 different bullets each being shot from new barrels that have identical twists, bore diameters and length. Pressure should be monitored in each barrel with piezoelectric sensors and both loads should use identical components (powder, primers, brass) and be prepared to shoot a minimum of about at least 1000 shots from each barrel. That means 1000 bullets of each weight. The erosion of the throat will start with fire cracking at the lead and first portion of the rifling. Tho get any sort of reliable conclusion in any experiment only one variable needs to be controlled. All other potential variables meed to be controlled.</p></blockquote><p></p>
[QUOTE="nralifer, post: 2594255, member: 94556"] You pose an interesting question that I have commented on before. Maybe you have some data, but all should realize that the 308 Win is one of the most efficient cartridges out there. It has a very long throat life. The only conclusive way to answer the question is to actually test 2 different bullets each being shot from new barrels that have identical twists, bore diameters and length. Pressure should be monitored in each barrel with piezoelectric sensors and both loads should use identical components (powder, primers, brass) and be prepared to shoot a minimum of about at least 1000 shots from each barrel. That means 1000 bullets of each weight. The erosion of the throat will start with fire cracking at the lead and first portion of the rifling. Tho get any sort of reliable conclusion in any experiment only one variable needs to be controlled. All other potential variables meed to be controlled. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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High Velocity Throat Erosion
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