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Rifles, Reloading, Optics, Equipment
Reloading
Fireforming .280 AI from .280 Remington brass or .270 Win brass?
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<blockquote data-quote="J E Custom" data-source="post: 1532794" data-attributes="member: 2736"><p>Sorry ED I think we are arguing the same point. I am not sure that you can chamber a standard 280 or 280 AI in a Nosler SAMMI 280 AI</p><p>because I have never tried it because of the increased length of the Ackley 280 AI over the SAMMI AI (.014 to .018 )</p><p>This problem is not related to head space. head space is set by the smith. The only contribution head space has to this is more or less total clearance from the case head to the shoulder.</p><p></p><p>This was how the original problem was found. Some of the shooters of the 280AI (Ackley) tried the new SAMMI ammo and had case head separation immediately. They contacted Dave with PT&G and ask about the reamer dimensions. Dave then looked at the NEW SAMMI spec. and found it had been altered from his drawing during the approval process before the reamers were made and missed the change, so the reamers were made to the new dimensions that exist today. The only reason that I have this firsthand knowledge is because I had ask him to build me a new reamer (because mine was well used) and we had lots of conversation about the difference in the two chambers. The fact that Nosler had it submitted and approved To SAMMI, All future reamers have to be made to the new dimension unless it is identified as a wildcat on the reamer. The new reamer can be used for ether chamber but the head space gauges will differ depending on which chamber you want.</p><p></p><p>The difference is still in the cartridge lengths which is the reason I posted to explain the difference. I have no problem with ether chamber just the chance that people will use the wrong cases/cartridge in one or the other chamber.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1532794, member: 2736"] Sorry ED I think we are arguing the same point. I am not sure that you can chamber a standard 280 or 280 AI in a Nosler SAMMI 280 AI because I have never tried it because of the increased length of the Ackley 280 AI over the SAMMI AI (.014 to .018 ) This problem is not related to head space. head space is set by the smith. The only contribution head space has to this is more or less total clearance from the case head to the shoulder. This was how the original problem was found. Some of the shooters of the 280AI (Ackley) tried the new SAMMI ammo and had case head separation immediately. They contacted Dave with PT&G and ask about the reamer dimensions. Dave then looked at the NEW SAMMI spec. and found it had been altered from his drawing during the approval process before the reamers were made and missed the change, so the reamers were made to the new dimensions that exist today. The only reason that I have this firsthand knowledge is because I had ask him to build me a new reamer (because mine was well used) and we had lots of conversation about the difference in the two chambers. The fact that Nosler had it submitted and approved To SAMMI, All future reamers have to be made to the new dimension unless it is identified as a wildcat on the reamer. The new reamer can be used for ether chamber but the head space gauges will differ depending on which chamber you want. The difference is still in the cartridge lengths which is the reason I posted to explain the difference. I have no problem with ether chamber just the chance that people will use the wrong cases/cartridge in one or the other chamber. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Fireforming .280 AI from .280 Remington brass or .270 Win brass?
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