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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
3 Groove Barrel ?
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<blockquote data-quote="rost495" data-source="post: 37266" data-attributes="member: 1768"><p>Like I said, my experiences in 3vs4 groove are only in 223 but having burned up many barrels in both grooves and knowing almost all our state team shooters having some of each going over the last 3-4 years the gain available is appx 75 fps. </p><p></p><p>That being said it may well have a lot to do with factors other than just groove numbers. It may be barrel size also. And cut vs button rifling. But I do know that in 223 and in 6.5 twist when you compare 4 groove Krieger vs 3 groove Pac Nor the accuracy is equal, barrel life leans well towards Krieger and velocity leans 75 fps to the Pac Nor.</p><p></p><p> BTW I'm not disputing anyone at all here as my experience in larger calibers is much more limited, but simply am posting this as a FWIW</p><p></p><p>Jeff</p></blockquote><p></p>
[QUOTE="rost495, post: 37266, member: 1768"] Like I said, my experiences in 3vs4 groove are only in 223 but having burned up many barrels in both grooves and knowing almost all our state team shooters having some of each going over the last 3-4 years the gain available is appx 75 fps. That being said it may well have a lot to do with factors other than just groove numbers. It may be barrel size also. And cut vs button rifling. But I do know that in 223 and in 6.5 twist when you compare 4 groove Krieger vs 3 groove Pac Nor the accuracy is equal, barrel life leans well towards Krieger and velocity leans 75 fps to the Pac Nor. BTW I'm not disputing anyone at all here as my experience in larger calibers is much more limited, but simply am posting this as a FWIW Jeff [/QUOTE]
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3 Groove Barrel ?
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