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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barnes 30 cal 212 LRX
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<blockquote data-quote="Wedgy" data-source="post: 2727649" data-attributes="member: 64108"><p>No flex at all, what the grooves in the bullet sidewall do is remove bearing surface(the sides of the bullet that contact the rifling) and that lesser amount of contact/friction decreases the pressure because the bullet is easier to push out of the barrel. The bands can allow a heavier bullet to be shot faster than a lighter bullet that does not have the reliefs cut giving it more contact/friction with the barrel.</p><p>Notice the contact points from the rifling on this bullet and see how they only contact the high spots.... the groove reduce contact with the barrel = lower pressure which is longer barrel life. Or you can have equal barrel life but be able to shoot the bullets faster.[ATTACH=full]432482[/ATTACH]</p></blockquote><p></p>
[QUOTE="Wedgy, post: 2727649, member: 64108"] No flex at all, what the grooves in the bullet sidewall do is remove bearing surface(the sides of the bullet that contact the rifling) and that lesser amount of contact/friction decreases the pressure because the bullet is easier to push out of the barrel. The bands can allow a heavier bullet to be shot faster than a lighter bullet that does not have the reliefs cut giving it more contact/friction with the barrel. Notice the contact points from the rifling on this bullet and see how they only contact the high spots.... the groove reduce contact with the barrel = lower pressure which is longer barrel life. Or you can have equal barrel life but be able to shoot the bullets faster.[ATTACH type="full"]432482[/ATTACH] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Barnes 30 cal 212 LRX
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