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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.270 barrel with super fast -twist
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<blockquote data-quote="Jtomlinson" data-source="post: 118780" data-attributes="member: 6305"><p>I have recently had my .270 winchester re-barreled and the barrel used was one made some time back in the U.S by a person named Rick Carnes?, it is a hand cut and lapped barrel cut to .278" but rather than the usual 1-12" twist it has a fast 1:8", clearly made for a specific project.</p><p></p><p>Ther rifle is a sporter weight the contour being something in the order of a #3, all up weight scoped is around the 9 lbs mark.</p><p></p><p>Range tests to date with factory ammo in the bullet range 130 -150 grains but has not turned up and sort of grouping whatsoever, some of this may be down to a scope related problem that is to be checked out at the next range session.</p><p></p><p>My question is this, given the fast twist of this barrel, what results may I expect from normal bullet weight for .270 calibre ammo, i.e 130 -150 grains, is the fast twist liable to be a detriment or, under certain conditions could it benefit accuracy?</p><p></p><p>I hand-load for this calibre but have since the fitting of the new barrel only tried factory loaded ammo.</p><p></p><p>I would welcome any thoughts on twist rates affecting accuracy.</p></blockquote><p></p>
[QUOTE="Jtomlinson, post: 118780, member: 6305"] I have recently had my .270 winchester re-barreled and the barrel used was one made some time back in the U.S by a person named Rick Carnes?, it is a hand cut and lapped barrel cut to .278" but rather than the usual 1-12" twist it has a fast 1:8", clearly made for a specific project. Ther rifle is a sporter weight the contour being something in the order of a #3, all up weight scoped is around the 9 lbs mark. Range tests to date with factory ammo in the bullet range 130 -150 grains but has not turned up and sort of grouping whatsoever, some of this may be down to a scope related problem that is to be checked out at the next range session. My question is this, given the fast twist of this barrel, what results may I expect from normal bullet weight for .270 calibre ammo, i.e 130 -150 grains, is the fast twist liable to be a detriment or, under certain conditions could it benefit accuracy? I hand-load for this calibre but have since the fitting of the new barrel only tried factory loaded ammo. I would welcome any thoughts on twist rates affecting accuracy. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.270 barrel with super fast -twist
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