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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Sig wins contract with the 277 fury
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<blockquote data-quote="cohunt" data-source="post: 1916147" data-attributes="member: 94491"><p>usually proof loads are around 25% over the operating pressures--so technically, the 277 furry would need to be proof tested to 100,000psi chamber pressure to pass safety tests --- the bolt thrust increase from 60000 to 80000 psi is about 1.3 times so I'm not sure that standard actions or bolts in AR's or bolt action rifles would successfully pass the proof load testing of this new cartridge (hence the reason SIG claims that a new stronger receiver was made for this cartridge) --yes , it could probably be used in a standard action--but for how long before wear or damage became a reality</p></blockquote><p></p>
[QUOTE="cohunt, post: 1916147, member: 94491"] usually proof loads are around 25% over the operating pressures--so technically, the 277 furry would need to be proof tested to 100,000psi chamber pressure to pass safety tests --- the bolt thrust increase from 60000 to 80000 psi is about 1.3 times so I'm not sure that standard actions or bolts in AR's or bolt action rifles would successfully pass the proof load testing of this new cartridge (hence the reason SIG claims that a new stronger receiver was made for this cartridge) --yes , it could probably be used in a standard action--but for how long before wear or damage became a reality [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Sig wins contract with the 277 fury
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