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40 degree

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    Pros/Cons of 30 vs 40 degree shoulder?

    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...
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