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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Decrease throat erosion with longer barrels?
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<blockquote data-quote="Beng" data-source="post: 815981" data-attributes="member: 37512"><p>Of course throat erosion will decrease when shooting a low pressure load, compared to hot loads. If your velocity is a constant, a longer barrel and slower burning powders will give you the same velocity at a lower pressure, than a hot load with fast burning powders in a shorter barrel. </p><p>You are asking about a .22-250.</p><p>This case has about the same volume as a .30-30.</p><p>A .22-250 chambered 30" barrel has about the same volume as a 17" .30-30 chambered barrel. Does someone want to say 17" is too long for a .30-30?</p><p>Changing barrel length means always playing with volume, the smaller the caliber your using, the slower pressure will decrease as the bullet runs down the barrel, because volume doesn't increase as fast as in a bigger bore.</p></blockquote><p></p>
[QUOTE="Beng, post: 815981, member: 37512"] Of course throat erosion will decrease when shooting a low pressure load, compared to hot loads. If your velocity is a constant, a longer barrel and slower burning powders will give you the same velocity at a lower pressure, than a hot load with fast burning powders in a shorter barrel. You are asking about a .22-250. This case has about the same volume as a .30-30. A .22-250 chambered 30" barrel has about the same volume as a 17" .30-30 chambered barrel. Does someone want to say 17" is too long for a .30-30? Changing barrel length means always playing with volume, the smaller the caliber your using, the slower pressure will decrease as the bullet runs down the barrel, because volume doesn't increase as fast as in a bigger bore. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Decrease throat erosion with longer barrels?
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