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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Need help on fire forming 280AI brass
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<blockquote data-quote="longbowelk" data-source="post: 1206553" data-attributes="member: 41272"><p>I am in the process of fire forming brass for my 280AI original Ackley version. I have done about 12 so far using the cream of wheat method. I went as high as 20 grains of Unique powder but dropped back to 19. I have checked the headspace of these 12 vs one case that was Fireformed using a loaded round and the difference ranges from .01 to .007. I don't see that the COW method is going to do the complete job. I am using new 280 Hornady brass. Here are my questions. ..</p><p>Are these 12 ok and ready to fully load according to max loads per say a Nosler manual?</p><p>My Sierra 5th edition says the case should be trimmed to 2.515. Mine are at 2.524. Should I trim them prior to reload or after shooting? This is a 26"Shilen barrel.</p><p>One final point I would make is when I started the COW I started at 10 grains and moved up a grain at a time. These that were 10 to 13 didn't move shoulders that much so I tried them a 2nd time using the 19 grains. I only did 2 as the primer had backed out so I decided this created a pressure problem. </p><p>Any help would be appreciated.</p></blockquote><p></p>
[QUOTE="longbowelk, post: 1206553, member: 41272"] I am in the process of fire forming brass for my 280AI original Ackley version. I have done about 12 so far using the cream of wheat method. I went as high as 20 grains of Unique powder but dropped back to 19. I have checked the headspace of these 12 vs one case that was Fireformed using a loaded round and the difference ranges from .01 to .007. I don't see that the COW method is going to do the complete job. I am using new 280 Hornady brass. Here are my questions. .. Are these 12 ok and ready to fully load according to max loads per say a Nosler manual? My Sierra 5th edition says the case should be trimmed to 2.515. Mine are at 2.524. Should I trim them prior to reload or after shooting? This is a 26"Shilen barrel. One final point I would make is when I started the COW I started at 10 grains and moved up a grain at a time. These that were 10 to 13 didn't move shoulders that much so I tried them a 2nd time using the 19 grains. I only did 2 as the primer had backed out so I decided this created a pressure problem. Any help would be appreciated. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Need help on fire forming 280AI brass
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