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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
280AI with too much head space...options?
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<blockquote data-quote="cohunt" data-source="post: 1924157" data-attributes="member: 94491"><p>as I said, just because it closes on a "no-go" gauge does not mean its technically out of spec---not necessarily good, but also not out of spec</p><p></p><p>if it wont close on a go gauge its out of spec--too short</p><p>If it closes on a no-go gauge then its time to check with a "field gauge"</p><p>If it closes on a field gauge then its out of spec --too long and possibly unsafe</p><p></p><p>[URL unfurl="true"]https://www.eabco.com/Reports/Head_Space_Gauges.htm[/URL]</p><p></p><p>sounds to me like your "old" smith used a 280 Improved reamer to ream the chamber but did not set the barrel back by a turn</p><p>did you check out the link I posted? it will help you learn about the different reamers made for the 280 Improved over the years and how the chambers are cut</p><p></p><p>.the rcbs dies you are using are for the saami chamber so if he didnt set back the chamber after he cut it then your dies will size the brass too small --sounds like you either need to have the barrel set back, or buy a set of the "old" 280 Improved dies to work with your chamber --or you could try the redding .014" shorter shell holder(11649 -- "#1 + .014") and see if it fixes your problem : <a href="https://www.midsouthshooterssupply.com/item/0007611649/-number-1-plus-14-shellholder" target="_blank">https://www.midsouthshooterssupply.com/item/0007611649/-number-1-plus-14-shellholder</a></p><p></p><p>here is another link to read from redding : <a href="https://www.redding-reloading.com/tech-line-a-tips-faqs/133-280-changes" target="_blank">https://www.redding-reloading.com/tech-line-a-tips-faqs/133-280-changes</a></p></blockquote><p></p>
[QUOTE="cohunt, post: 1924157, member: 94491"] as I said, just because it closes on a "no-go" gauge does not mean its technically out of spec---not necessarily good, but also not out of spec if it wont close on a go gauge its out of spec--too short If it closes on a no-go gauge then its time to check with a "field gauge" If it closes on a field gauge then its out of spec --too long and possibly unsafe [URL unfurl="true"]https://www.eabco.com/Reports/Head_Space_Gauges.htm[/URL] sounds to me like your "old" smith used a 280 Improved reamer to ream the chamber but did not set the barrel back by a turn did you check out the link I posted? it will help you learn about the different reamers made for the 280 Improved over the years and how the chambers are cut .the rcbs dies you are using are for the saami chamber so if he didnt set back the chamber after he cut it then your dies will size the brass too small --sounds like you either need to have the barrel set back, or buy a set of the "old" 280 Improved dies to work with your chamber --or you could try the redding .014" shorter shell holder(11649 -- "#1 + .014") and see if it fixes your problem : [URL]https://www.midsouthshooterssupply.com/item/0007611649/-number-1-plus-14-shellholder[/URL] here is another link to read from redding : [URL]https://www.redding-reloading.com/tech-line-a-tips-faqs/133-280-changes[/URL] [/QUOTE]
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280AI with too much head space...options?
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