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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bore size of 7mm barrel?
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<blockquote data-quote="johnnyk" data-source="post: 433245" data-attributes="member: 307"><p>Desertbull,</p><p></p><p>Rifled bores may be described by the bore diameter (the diameter across the lands or high points in the rifling), or by groove diameter (the diameter across the grooves or low points in the rifling).</p><p>Differences in naming conventions for cartridges can cause confusion; for example, the .303 British is actually slightly larger in diameter than the .308 Winchester, because the ".303" refers to the bore diameter in inches, while the ".308" refers to the groove diameter in inches (7.70 mm and 7.62 mm, respectively).</p><p>Hope this helps. JohnnyK.</p></blockquote><p></p>
[QUOTE="johnnyk, post: 433245, member: 307"] Desertbull, Rifled bores may be described by the bore diameter (the diameter across the lands or high points in the rifling), or by groove diameter (the diameter across the grooves or low points in the rifling). Differences in naming conventions for cartridges can cause confusion; for example, the .303 British is actually slightly larger in diameter than the .308 Winchester, because the ".303" refers to the bore diameter in inches, while the ".308" refers to the groove diameter in inches (7.70 mm and 7.62 mm, respectively). Hope this helps. JohnnyK. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bore size of 7mm barrel?
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