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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
converting a .30-.378 to a .338-.378
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<blockquote data-quote="Bart B" data-source="post: 106784" data-attributes="member: 5302"><p>Fiftydriver's right. Get a new barrel.</p><p></p><p>When a drilled barrel blank is rifled, the first inch or so at each end has irregular bore, groove and rifling angle dimensions. That happens because the pilots and guides for the rifling tools run out of hole to keep them properly aligned. The back end of a freshly made barrel gets cleaned up by the chambering reamer. The front end gets cut off an inch and crowned by the person fitting the barrel.</p><p></p><p>Which means reboring and re-rifling your barrel to a larger caliber would result in a less accurate rifle.</p></blockquote><p></p>
[QUOTE="Bart B, post: 106784, member: 5302"] Fiftydriver's right. Get a new barrel. When a drilled barrel blank is rifled, the first inch or so at each end has irregular bore, groove and rifling angle dimensions. That happens because the pilots and guides for the rifling tools run out of hole to keep them properly aligned. The back end of a freshly made barrel gets cleaned up by the chambering reamer. The front end gets cut off an inch and crowned by the person fitting the barrel. Which means reboring and re-rifling your barrel to a larger caliber would result in a less accurate rifle. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
converting a .30-.378 to a .338-.378
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