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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: 1916127" data-attributes="member: 94491"><p>problem with the AR style chassis is probably going to be in the bolt/barrel extension lock up strength, the upper/lower dont really hold the pressure due to the bolt/extension design --but bolt thrust on a .473" with 80000psi will probably over stress the current bolt lug design, I'm sure it will be figured out, but I'm sure the design and strength will have to change for the full 80000 psi version of this cartridge in an AR style chassis-- there is already full brass cartridges available for reloading (<a href="https://www.rccbrass.com/277-fury/" target="_blank">https://www.rccbrass.com/277-fury/</a>) and ptg reamers (<a href="http://pacifictoolandgauge.com/chamber-reamers-cip-saami-wildcats-competition-custom-sale-no-pix-/19564-277-sig-fury-chamber-reamer.html" target="_blank">http://pacifictoolandgauge.com/chamber-reamers-cip-saami-wildcats-competition-custom-sale-no-pix-/19564-277-sig-fury-chamber-reamer.html</a>)</p><p></p><p>one problem I see with all this is the strength issue, SIG says that you need a stronger receiver/bolt and so far I don't think any rifle action manufacture has agreed that their action will be safe for the new 80000 psi chamber pressure--yet you can buy a reamer, and brass cartridges and make a "low pressure" version of this right now--then some poor schmuck is gonna stick the high pressure ammo in a receiver/bolt combo that may eventually fail as its not designed to handle the 80000 psi</p></blockquote><p></p>
[QUOTE="cohunt, post: 1916127, member: 94491"] problem with the AR style chassis is probably going to be in the bolt/barrel extension lock up strength, the upper/lower dont really hold the pressure due to the bolt/extension design --but bolt thrust on a .473" with 80000psi will probably over stress the current bolt lug design, I'm sure it will be figured out, but I'm sure the design and strength will have to change for the full 80000 psi version of this cartridge in an AR style chassis-- there is already full brass cartridges available for reloading ([URL]https://www.rccbrass.com/277-fury/[/URL]) and ptg reamers ([URL]http://pacifictoolandgauge.com/chamber-reamers-cip-saami-wildcats-competition-custom-sale-no-pix-/19564-277-sig-fury-chamber-reamer.html[/URL]) one problem I see with all this is the strength issue, SIG says that you need a stronger receiver/bolt and so far I don't think any rifle action manufacture has agreed that their action will be safe for the new 80000 psi chamber pressure--yet you can buy a reamer, and brass cartridges and make a "low pressure" version of this right now--then some poor schmuck is gonna stick the high pressure ammo in a receiver/bolt combo that may eventually fail as its not designed to handle the 80000 psi [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Sig wins contract with the 277 fury
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