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Rifles, Reloading, Optics, Equipment
Reloading
Neck Sizing Vs. Full Length Sizing and Neck Tension
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<blockquote data-quote="Tiny Tim" data-source="post: 2217359" data-attributes="member: 87887"><p>Belted brass can be "full length sized" after fire forming in YOUR chamber by simply measuring and "bumping the shoulder back. 002-.003". Oftentimes, setting up a full length die as the manufacturer states on a belted cartridge creates excessive space between the cartridge shoulder and the chamber shoulder which in turn causes the head separation issue you speak of. It can be overcome as others state by fire forming it and then treating it like a non-belted cartridge. Chambers were often cut this way to provide ensured chambering, especially when hunting dangerous game. </p><p> As far as interference fit, which many call "neck tension", it is a variable and is often determined but many other factors such as SAAMI chamber or custom, neck wall thickness, cartridge neck to chamber clearance, annealing, bullet jump/jam, bullet type (jacketed vs. mono), etc..... Many use a Lee factory crimp die to adjust "tension" and find that it is another tool to help improve consistency. Due to all the above mentioned factors and more that others will likely specify, each rifle is unique and may take a little tinkering to get cartridges to shoot best in your rifle.</p></blockquote><p></p>
[QUOTE="Tiny Tim, post: 2217359, member: 87887"] Belted brass can be "full length sized" after fire forming in YOUR chamber by simply measuring and "bumping the shoulder back. 002-.003". Oftentimes, setting up a full length die as the manufacturer states on a belted cartridge creates excessive space between the cartridge shoulder and the chamber shoulder which in turn causes the head separation issue you speak of. It can be overcome as others state by fire forming it and then treating it like a non-belted cartridge. Chambers were often cut this way to provide ensured chambering, especially when hunting dangerous game. As far as interference fit, which many call "neck tension", it is a variable and is often determined but many other factors such as SAAMI chamber or custom, neck wall thickness, cartridge neck to chamber clearance, annealing, bullet jump/jam, bullet type (jacketed vs. mono), etc..... Many use a Lee factory crimp die to adjust "tension" and find that it is another tool to help improve consistency. Due to all the above mentioned factors and more that others will likely specify, each rifle is unique and may take a little tinkering to get cartridges to shoot best in your rifle. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Neck Sizing Vs. Full Length Sizing and Neck Tension
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