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Rifles, Reloading, Optics, Equipment
Reloading
Fire-forming 280 Ackley Improved from Lapua 30-06?
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<blockquote data-quote="shortgrass" data-source="post: 435101" data-attributes="member: 24284"><p>If you have to create a 'false shoulder', on the neck ,to support the case during fire forming the chamber is either too long (headspace) or the brass is too short. In either case you're asking the brass to stretch too far. I've used P.O. Ackleys' method for more than 25 yrs. That Ackley chamber is <em>shorter </em>than a minimum chamber of its parent cartridge (by just a few .001"). The case to be fire formed should be supported securely between the bolt face and at the junction of the neck & shoulder angle. When the bolt is closed on the round to be FF a slight resistance should be felt thru the bolt handle. That tells me the case is supported properly on both ends and that I'm not asking the brass to stetch so far that it will end up too thin or just plain part trying to fill that chamber. By setting the chamber up in this manner I've never had to 'jam a bullet into the rifling' when fire forming and factory loaded ammo has always formed just fine. Case loss from FF is very, very low,,, near zero! Use .280 brass and have zero problems (if the chamber/headspace is correct) or use .270 or .30/06 brass and have the possiblity of many problems. Powder Valley has Nosler .280 brass in stock. I'm curious, why the tight neck chamber?</p></blockquote><p></p>
[QUOTE="shortgrass, post: 435101, member: 24284"] If you have to create a 'false shoulder', on the neck ,to support the case during fire forming the chamber is either too long (headspace) or the brass is too short. In either case you're asking the brass to stretch too far. I've used P.O. Ackleys' method for more than 25 yrs. That Ackley chamber is [I]shorter [/I]than a minimum chamber of its parent cartridge (by just a few .001"). The case to be fire formed should be supported securely between the bolt face and at the junction of the neck & shoulder angle. When the bolt is closed on the round to be FF a slight resistance should be felt thru the bolt handle. That tells me the case is supported properly on both ends and that I'm not asking the brass to stetch so far that it will end up too thin or just plain part trying to fill that chamber. By setting the chamber up in this manner I've never had to 'jam a bullet into the rifling' when fire forming and factory loaded ammo has always formed just fine. Case loss from FF is very, very low,,, near zero! Use .280 brass and have zero problems (if the chamber/headspace is correct) or use .270 or .30/06 brass and have the possiblity of many problems. Powder Valley has Nosler .280 brass in stock. I'm curious, why the tight neck chamber? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Fire-forming 280 Ackley Improved from Lapua 30-06?
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