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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Semi Custom Kimber Montana 280AI
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<blockquote data-quote="shortgrass" data-source="post: 939941" data-attributes="member: 24284"><p>.280 Remington cartridges will easily fit into a .280 Nosler A.I. chamber,,,, too easily! When fire forming the parent cartridge to an Ackley, the bolt should close with a slight resistance on the parent round. Ackley designed these like this so that the cartridge case would be firmly 'trapped' between the neck/shoulder junction and the bolt face. In the .280 Nosler A.I. chamber this will not be the case, the .280 Rem. round will NOT be firmly against the bolt face, or 'trapped', and firing it like this will be like firing a round in a chamber with exessive headspace. This is probably why azgutpiles' friend (from the "280 AI Concerns" thread) had a case head speration and has to seat the bullets into the lands when fire forming to avoid case head deformation. I'd have to have his rifle in my hands to find out for sure.</p></blockquote><p></p>
[QUOTE="shortgrass, post: 939941, member: 24284"] .280 Remington cartridges will easily fit into a .280 Nosler A.I. chamber,,,, too easily! When fire forming the parent cartridge to an Ackley, the bolt should close with a slight resistance on the parent round. Ackley designed these like this so that the cartridge case would be firmly 'trapped' between the neck/shoulder junction and the bolt face. In the .280 Nosler A.I. chamber this will not be the case, the .280 Rem. round will NOT be firmly against the bolt face, or 'trapped', and firing it like this will be like firing a round in a chamber with exessive headspace. This is probably why azgutpiles' friend (from the "280 AI Concerns" thread) had a case head speration and has to seat the bullets into the lands when fire forming to avoid case head deformation. I'd have to have his rifle in my hands to find out for sure. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Semi Custom Kimber Montana 280AI
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