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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Pac-Nor POLYGONAL rifling anyone?????
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<blockquote data-quote="Centre Punch" data-source="post: 94143" data-attributes="member: 3048"><p>Hi Guys i have a question about polygonal rifling which i hope some of you will be able to answer.</p><p></p><p>Firstly the Witworth barrel had a hexagonal bore and shot a tightly fitting hexagonal bullet to achieve its exceptional accuracy. </p><p>A conventional cylindrical bullet could be shot using this rifling, as long it was tightly patched to seal the bore but this way accuracy was mediocre.</p><p></p><p>I understand that polygonal rifling uses the 5 sides of the polygon to spin the bullet, therefore is the bore of the the polygonal rifled barrel smaller then bullet diameter? and does it swage down the bullet to take on the polygonal form in order to seal the barrel?</p><p></p><p>Alternatively, are the sides of the bore the same diameter as the bullet and pressure bumps up the bullet to seal the bore of the barrel? Thanks.</p><p></p><p>Ian.</p></blockquote><p></p>
[QUOTE="Centre Punch, post: 94143, member: 3048"] Hi Guys i have a question about polygonal rifling which i hope some of you will be able to answer. Firstly the Witworth barrel had a hexagonal bore and shot a tightly fitting hexagonal bullet to achieve its exceptional accuracy. A conventional cylindrical bullet could be shot using this rifling, as long it was tightly patched to seal the bore but this way accuracy was mediocre. I understand that polygonal rifling uses the 5 sides of the polygon to spin the bullet, therefore is the bore of the the polygonal rifled barrel smaller then bullet diameter? and does it swage down the bullet to take on the polygonal form in order to seal the barrel? Alternatively, are the sides of the bore the same diameter as the bullet and pressure bumps up the bullet to seal the bore of the barrel? Thanks. Ian. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Pac-Nor POLYGONAL rifling anyone?????
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