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Long Range Hunting & Shooting
Gun Smithing- 270 AI Chamber Question
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<blockquote data-quote="59FLH" data-source="post: 2784048" data-attributes="member: 108480"><p>Hankle,, to clarify a bit, the chamber is not shorter it's where the parent go gauge contacts the neck and shoulder junction is .004" shorter. I just went through this on another forum. The few AI chambers I have cut have all been 280AI and I have SAAMI go gauges for that caliber. Im going to cut a non SAAMI 7-08AI later this week and I'm going to do one of a few things</p><p></p><p>1. If my Manson 7-08AI go gauge arrives in time, use it</p><p></p><p>If not</p><p></p><p>2. Grind .004" off the bolt face of a std 7-08 go gauge</p><p></p><p>or</p><p></p><p>3. Close the bolt on a minimum chamber with an unmodified std 7-08 go gauge and then face .004" or what's needed off the barrels shoulder and breech face(s) to get the recommended .004" crush at the NSJ.</p><p></p><p>I hope you and you friend find this advice helpful. Just substitute 270 Win for 7-08</p></blockquote><p></p>
[QUOTE="59FLH, post: 2784048, member: 108480"] Hankle,, to clarify a bit, the chamber is not shorter it’s where the parent go gauge contacts the neck and shoulder junction is .004” shorter. I just went through this on another forum. The few AI chambers I have cut have all been 280AI and I have SAAMI go gauges for that caliber. Im going to cut a non SAAMI 7-08AI later this week and I’m going to do one of a few things 1. If my Manson 7-08AI go gauge arrives in time, use it If not 2. Grind .004“ off the bolt face of a std 7-08 go gauge or 3. Close the bolt on a minimum chamber with an unmodified std 7-08 go gauge and then face .004” or what’s needed off the barrels shoulder and breech face(s) to get the recommended .004” crush at the NSJ. I hope you and you friend find this advice helpful. Just substitute 270 Win for 7-08 [/QUOTE]
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