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Varmint Hunting
.243 .23 caliber or less?
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<blockquote data-quote="tulku" data-source="post: 566532" data-attributes="member: 5203"><p>Here's a little more about " Caliber " . It looks like the Groove Diameter ( of the Barrel ) is about the same size as the Bullet Diameter or in some cases 0.002 or 0.003 inches larger . These Grooves impart Spin to the Bullet . The Barrel Bore diameter is typically 0.008 to maybe a few more than 0.008 thousandths smaller than The Bullet Diameter . I could not find exact Figures for the 6MM . But here are some for the 30 Caliber : Groove = 0.308 inches , Bullet = 0.308 inches , Bore = 0.300 inches . If you use these Numbers as typical , your 6 MM Bore Diam is about 0.235 inches .</p></blockquote><p></p>
[QUOTE="tulku, post: 566532, member: 5203"] Here's a little more about " Caliber " . It looks like the Groove Diameter ( of the Barrel ) is about the same size as the Bullet Diameter or in some cases 0.002 or 0.003 inches larger . These Grooves impart Spin to the Bullet . The Barrel Bore diameter is typically 0.008 to maybe a few more than 0.008 thousandths smaller than The Bullet Diameter . I could not find exact Figures for the 6MM . But here are some for the 30 Caliber : Groove = 0.308 inches , Bullet = 0.308 inches , Bore = 0.300 inches . If you use these Numbers as typical , your 6 MM Bore Diam is about 0.235 inches . [/QUOTE]
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.243 .23 caliber or less?
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