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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Pros/Cons of 30 vs 40 degree shoulder?
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<blockquote data-quote="Andy4600" data-source="post: 2581183" data-attributes="member: 123873"><p>What are the advantages/disadvantages of a 30 vs 40 degree shoulder in a round, if all else is equal?</p><p></p><p>I've read there is a slight accuracy advantage in a 30 degree shoulder. Any truth to this?</p><p></p><p>I've also read somehing about less throat erosion and longer barrel life in a 30 degree shoulder...but the proof on this was vague.</p><p></p><p>Other items I am fairly sure of:</p><p>30 degree should feed better (but this matters little in a bolt gun).</p><p>40 degree has better case life due to less expansion.</p><p></p><p>Anything else?</p></blockquote><p></p>
[QUOTE="Andy4600, post: 2581183, member: 123873"] What are the advantages/disadvantages of a 30 vs 40 degree shoulder in a round, if all else is equal? I've read there is a slight accuracy advantage in a 30 degree shoulder. Any truth to this? I've also read somehing about less throat erosion and longer barrel life in a 30 degree shoulder...but the proof on this was vague. Other items I am fairly sure of: 30 degree should feed better (but this matters little in a bolt gun). 40 degree has better case life due to less expansion. Anything else? [/QUOTE]
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Pros/Cons of 30 vs 40 degree shoulder?
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