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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
What effect does the number of grooves have in magnum calibers?
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<blockquote data-quote="Mc Fraser" data-source="post: 1977162" data-attributes="member: 106529"><p>My gunsmith suggests that there is not much difference between the # of grooves. He noticed that some small caliber target bullets tend to lose their jacket mid-air when shot from a barrel that has 5-6 grooves.</p><p>I don't know much about modern military cannons, but old ones used in past world wars have lots of grooves. </p><p>My questions are towards grove-less barrels, will they shoot better, more velocity because the gas cannot escape around the bullet? </p><p>I guess it all boils down to the area of friction vs area through which the gas can escape ahead of the bullet, how that affects bullet speed and accuracy and of course the cost of manufacturing barrels.</p></blockquote><p></p>
[QUOTE="Mc Fraser, post: 1977162, member: 106529"] My gunsmith suggests that there is not much difference between the # of grooves. He noticed that some small caliber target bullets tend to lose their jacket mid-air when shot from a barrel that has 5-6 grooves. I don't know much about modern military cannons, but old ones used in past world wars have lots of grooves. My questions are towards grove-less barrels, will they shoot better, more velocity because the gas cannot escape around the bullet? I guess it all boils down to the area of friction vs area through which the gas can escape ahead of the bullet, how that affects bullet speed and accuracy and of course the cost of manufacturing barrels. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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What effect does the number of grooves have in magnum calibers?
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