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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Cutting Edge Bullet Velocity
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<blockquote data-quote="Pdvdh" data-source="post: 529937" data-attributes="member: 4191"><p>LTLR,</p><p></p><p>As I understand it - strictly from reading and researching on the various web sources - these lathe turned monolithic bullets are manufactured with a raised rib or ribs, which serve to seal gases between the bullet and the bore. The lands of the rifling only engage the raised driving band(s), which reduces the bullet to bore friction. </p><p></p><p>It's taking the Barnes TSX to the extreme. If Barnes removed all of the full-bore diameter sidewalls of their bullets, and only left very narrow strips to engage the rifling, then the bullet to bore friction would be dramatically decreased, resulting in lower pressures with equal powder charges. To get back up to full working pressures, additional powder can now be added, resulting in even higher MVs. It's like increasing case capacity without increasing case capacity. Due to the lowered bullet to bore friction, additional powder can be added without exceeding safe pressures - driving the MV up somewhat. My analysis and thoughts on the matter...</p><p></p><p>But the increased velocities you're getting from the 180 grain CEs in your Tikka T3 are jaw-dropping. Please bust a caribou or two with the Tikka and report back on terminal on-game performance.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 529937, member: 4191"] LTLR, As I understand it - strictly from reading and researching on the various web sources - these lathe turned monolithic bullets are manufactured with a raised rib or ribs, which serve to seal gases between the bullet and the bore. The lands of the rifling only engage the raised driving band(s), which reduces the bullet to bore friction. It's taking the Barnes TSX to the extreme. If Barnes removed all of the full-bore diameter sidewalls of their bullets, and only left very narrow strips to engage the rifling, then the bullet to bore friction would be dramatically decreased, resulting in lower pressures with equal powder charges. To get back up to full working pressures, additional powder can now be added, resulting in even higher MVs. It's like increasing case capacity without increasing case capacity. Due to the lowered bullet to bore friction, additional powder can be added without exceeding safe pressures - driving the MV up somewhat. My analysis and thoughts on the matter... But the increased velocities you're getting from the 180 grain CEs in your Tikka T3 are jaw-dropping. Please bust a caribou or two with the Tikka and report back on terminal on-game performance. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Cutting Edge Bullet Velocity
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