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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
What type of rifling for a 260AI?
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<blockquote data-quote="elkaholic" data-source="post: 766636" data-attributes="member: 13833"><p>You definitely do not need a 7 twist. An 8 1/2 twist is sufficient for 140's. As far as # of grooves goes, I've had 3, 4, 5, and 6 and as long as the quality of barrel is good, any will work. The 3 grooves tend to wear a little better because they have wider lands but the .260 A.I. is not a big barrel burner. Some people like the canted lands for velocity and clean up but I can't really see any difference in mine. They are both good and my 4 groove Krieger cleans up as well as my 5r Bartlein......Rich</p></blockquote><p></p>
[QUOTE="elkaholic, post: 766636, member: 13833"] You definitely do not need a 7 twist. An 8 1/2 twist is sufficient for 140's. As far as # of grooves goes, I've had 3, 4, 5, and 6 and as long as the quality of barrel is good, any will work. The 3 grooves tend to wear a little better because they have wider lands but the .260 A.I. is not a big barrel burner. Some people like the canted lands for velocity and clean up but I can't really see any difference in mine. They are both good and my 4 groove Krieger cleans up as well as my 5r Bartlein......Rich [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
What type of rifling for a 260AI?
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