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Reloading
Pressure Signs Help Needed
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<blockquote data-quote="Elk Hunter 338" data-source="post: 1835520" data-attributes="member: 23509"><p>"""""The Sammi spec 280ai is the same size as the PO Ackley 280ai. They use the same brass and headspace guages. Someone mentioned .014 shorter. This is false. The reason you think it's off is because when Nosler went to get the cartridge Sammi spec'ed they had to use the proper datum line. Po Ackley used a different spot on the shoulder when he measured his. If the Nosler was .014 shorter you wouldn't be able to fire a regular 280 in it. Plus they wouldn't be allowed to call it a 280ai. It would have to be called a 280 improved. When I chamber a 280ai the Nosler brass fits perfect and I definitely don't make my chamber .014 short.</p><p>Shep .... """"""</p><p></p><p><span style="color: rgb(209, 72, 65)"><strong>Thats huge negative GHOST RIDER!!! ^^^^^</strong></span></p><p></p><p>[ATTACH=full]176562[/ATTACH]</p><p><span style="color: rgb(209, 72, 65)"><strong>merry Christmas!!! ^^^^</strong></span></p><p><span style="color: rgb(209, 72, 65)"><strong></strong></span></p><p><span style="color: rgb(209, 72, 65)"><strong>oh and happy new year !!!! straight off of reddings website!!!</strong> <strong>and if you need further proof that in fact this is correct i'd call Dave Kiff the one that designed the new version for nosler personally!!!</strong></span></p><p></p><p>"""The SAAMI spec cartridge carries the approved name of " 280 Ackley Improved " .</p><p>The older wildcat has several names including 280 Ackley Improved 40°, 280 Rem Improved 40°, 280 Imp 40°, 280 Ackley, 280 Rem Imp, and more.</p><p>The SAAMI spec 280 Ackley Improved chamber is .014 inches shorter at the datum line headspace dimension than the traditionally accepted wildcat chamber spec as previously produced.</p><p>Our current production dies are for chambers that are cut to the SAAMI specification and are stamped "280 Ackley Imp".</p><p>Any Redding dies made before 2011 are stamped " 280 Rem Imp 40° " and are built to the originally accepted wildcat specs.</p><p>These older dies will not bump the shoulder of cases for a SAAMI chamber. In other words, the old dies are too deep for the current SAAMI chamber.</p><p>Redding makes a Competition shellholder that is .014 deeper than the standard #1 shellholder so the owner of a <span style="color: rgb(209, 72, 65)"><strong>wildcat chamber can use the current SAAMI spec dies for safe resizing. </strong></span></p><p><span style="color: rgb(209, 72, 65)"><strong><em>Failing to use this shellholder or to back the die away from a standard shellholder by a minimum of 0.014" will result in too much shoulder bump which may create an unsafe, excessive headspace condition when fired in a traditionally dimensioned wildcat chamber.</em> """""</strong></span></p></blockquote><p></p>
[QUOTE="Elk Hunter 338, post: 1835520, member: 23509"] """""The Sammi spec 280ai is the same size as the PO Ackley 280ai. They use the same brass and headspace guages. Someone mentioned .014 shorter. This is false. The reason you think it's off is because when Nosler went to get the cartridge Sammi spec'ed they had to use the proper datum line. Po Ackley used a different spot on the shoulder when he measured his. If the Nosler was .014 shorter you wouldn't be able to fire a regular 280 in it. Plus they wouldn't be allowed to call it a 280ai. It would have to be called a 280 improved. When I chamber a 280ai the Nosler brass fits perfect and I definitely don't make my chamber .014 short. Shep .... """""" [COLOR=rgb(209, 72, 65)][B]Thats huge negative GHOST RIDER!!! ^^^^^[/B][/COLOR] [ATTACH type="full" alt="280 Ackley Versions_Resized.jpg"]176562[/ATTACH] [COLOR=rgb(209, 72, 65)][B]merry Christmas!!! ^^^^ oh and happy new year !!!! straight off of reddings website!!![/B] [B]and if you need further proof that in fact this is correct i'd call Dave Kiff the one that designed the new version for nosler personally!!![/B][/COLOR] """The SAAMI spec cartridge carries the approved name of " 280 Ackley Improved " . The older wildcat has several names including 280 Ackley Improved 40°, 280 Rem Improved 40°, 280 Imp 40°, 280 Ackley, 280 Rem Imp, and more. The SAAMI spec 280 Ackley Improved chamber is .014 inches shorter at the datum line headspace dimension than the traditionally accepted wildcat chamber spec as previously produced. Our current production dies are for chambers that are cut to the SAAMI specification and are stamped "280 Ackley Imp". Any Redding dies made before 2011 are stamped " 280 Rem Imp 40° " and are built to the originally accepted wildcat specs. These older dies will not bump the shoulder of cases for a SAAMI chamber. In other words, the old dies are too deep for the current SAAMI chamber. Redding makes a Competition shellholder that is .014 deeper than the standard #1 shellholder so the owner of a [COLOR=rgb(209, 72, 65)][B]wildcat chamber can use the current SAAMI spec dies for safe resizing. [I]Failing to use this shellholder or to back the die away from a standard shellholder by a minimum of 0.014" will result in too much shoulder bump which may create an unsafe, excessive headspace condition when fired in a traditionally dimensioned wildcat chamber.[/I] """""[/B][/COLOR] [/QUOTE]
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