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Long Range Hunting & Shooting
How much throat erosion is “normal”
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<blockquote data-quote="Rflshootr" data-source="post: 2789820" data-attributes="member: 10284"><p>A number of things contribute to the amount of throat wear. Bullet type, throat angle and powder. Powder is the probably the most influential. Or more specifically, the amount of powder burned. Any given barrel will only burn a given amount of powder before the throat has eroded to an unusable length. Whether you burn it in small amounts at a time or in large amounts, pretty much determines throat life. So, shooting light bullets with more powder as compared to heavy bullets with less powder, will burn the throat faster. As an example, a 6mm BR shooting <em>the same bullet</em> as a 243 Win, will have longer throat life simply because less powder is used. The change of the angle as was mentioned previously, is in fact throat wear. Any time rounds are fired, there is some amount of erosion, regardless of where metal is worn/burned away from the throat/bore. The amount you are seeing is pretty much in the normal range of what I have experienced with a 243 Win.</p></blockquote><p></p>
[QUOTE="Rflshootr, post: 2789820, member: 10284"] A number of things contribute to the amount of throat wear. Bullet type, throat angle and powder. Powder is the probably the most influential. Or more specifically, the amount of powder burned. Any given barrel will only burn a given amount of powder before the throat has eroded to an unusable length. Whether you burn it in small amounts at a time or in large amounts, pretty much determines throat life. So, shooting light bullets with more powder as compared to heavy bullets with less powder, will burn the throat faster. As an example, a 6mm BR shooting [I]the same bullet[/I] as a 243 Win, will have longer throat life simply because less powder is used. The change of the angle as was mentioned previously, is in fact throat wear. Any time rounds are fired, there is some amount of erosion, regardless of where metal is worn/burned away from the throat/bore. The amount you are seeing is pretty much in the normal range of what I have experienced with a 243 Win. [/QUOTE]
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How much throat erosion is “normal”
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