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Rifles, Reloading, Optics, Equipment
Reloading
.280AI SAAMI vs. Original Chambering
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<blockquote data-quote="J E Custom" data-source="post: 1246412" data-attributes="member: 2736"><p>Lots of people have used the new Nosler brass in their older chambers with little or no problems.</p><p></p><p>Head space is still a problem in some chambers and case head separation is still a possibility depending on the older AI chamber.</p><p></p><p>I feel it is best to use the Nosler brass In the new SAMMI chamber and all other brands of 280 brass</p><p>in the older chamber just to be safe. </p><p></p><p>As you said, there have been lots of debates about this and many opinions so you are on your own</p><p>because your chamber could be close enough to the new chamber that you don't have a problem, or it could be just the opposite, and your cases could/will fail early. </p><p></p><p>Most people think that it is just easier to buy the Nosler brass/ammo and shoot it because it is already to the new SAMMI size and it will save fire forming. But a properly head spaced AI chamber</p><p>is unbelievably accurate when firing 280 Remington cases/ammo and there is no chance of case head separation.</p><p></p><p>This problem has nothing to do with cost, it is about head space and the effects of it when it exceeds</p><p>.003 or .004 thousandths. There are many different original AI chambers because of the reamers used and the head space that was used in them. (It can be as much as .014 to .018) more than the SAMMI chamber.</p><p></p><p>I would load the once fired brass and as you shoot it watch for signs of pending case head separation and toss all of it, or start over with quality 280 brass and don't worry about it. </p><p></p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1246412, member: 2736"] Lots of people have used the new Nosler brass in their older chambers with little or no problems. Head space is still a problem in some chambers and case head separation is still a possibility depending on the older AI chamber. I feel it is best to use the Nosler brass In the new SAMMI chamber and all other brands of 280 brass in the older chamber just to be safe. As you said, there have been lots of debates about this and many opinions so you are on your own because your chamber could be close enough to the new chamber that you don't have a problem, or it could be just the opposite, and your cases could/will fail early. Most people think that it is just easier to buy the Nosler brass/ammo and shoot it because it is already to the new SAMMI size and it will save fire forming. But a properly head spaced AI chamber is unbelievably accurate when firing 280 Remington cases/ammo and there is no chance of case head separation. This problem has nothing to do with cost, it is about head space and the effects of it when it exceeds .003 or .004 thousandths. There are many different original AI chambers because of the reamers used and the head space that was used in them. (It can be as much as .014 to .018) more than the SAMMI chamber. I would load the once fired brass and as you shoot it watch for signs of pending case head separation and toss all of it, or start over with quality 280 brass and don't worry about it. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
.280AI SAAMI vs. Original Chambering
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