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Have You Ever Wondered
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<blockquote data-quote="nksmfamjp" data-source="post: 2937006" data-attributes="member: 1951"><p>Good questions:</p><p></p><p>There are basically 3 reasons. First is SAAMI has no revision system. Once you make a 270 Winchester, the design is standardized and cannot evolve. Even a small change like 0.03" lengthening of throat is a new cartridge….even a significant twist change needs a new cartridge!</p><p></p><p>Second is marketing. Nothing sells rifles like a new chambering! Think 350 legend, 360 buckhammer, 300 WSM….OMG, I need a new rifle!</p><p></p><p>Third is tech changes like belted mag, beltless mag, high head height, etc.</p><p></p><p></p><p>Lever actions use a sliding lockup which is weaker. They cannot handle the same bolt thrust without breaking/yielding.</p><p></p><p>Bolt actions use a sliding cam lock up which can handle 65000 psi plus depending on the exact design. Most modern rounds are 65000 psi.</p></blockquote><p></p>
[QUOTE="nksmfamjp, post: 2937006, member: 1951"] Good questions: There are basically 3 reasons. First is SAAMI has no revision system. Once you make a 270 Winchester, the design is standardized and cannot evolve. Even a small change like 0.03” lengthening of throat is a new cartridge….even a significant twist change needs a new cartridge! Second is marketing. Nothing sells rifles like a new chambering! Think 350 legend, 360 buckhammer, 300 WSM….OMG, I need a new rifle! Third is tech changes like belted mag, beltless mag, high head height, etc. Lever actions use a sliding lockup which is weaker. They cannot handle the same bolt thrust without breaking/yielding. Bolt actions use a sliding cam lock up which can handle 65000 psi plus depending on the exact design. Most modern rounds are 65000 psi. [/QUOTE]
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