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Rifles, Reloading, Optics, Equipment
Reloading
Question about Fire Forming 257 bobs into 257 AI
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<blockquote data-quote="MagnumManiac" data-source="post: 2214655" data-attributes="member: 10755"><p>Looks like brittle brass to me.</p><p>It's never a good idea to use brass fired in the parent chamber to then try to fireform to the AI.</p><p>I did the same in both my 22-250AI and 257AI when I was green.</p><p>Nowadays, I only ever use NEW brass and I anneal it before I attempt to fireform them.</p><p>Some brass should be avoided in my experience. Norma, Federal & early Nosler brass do not like fire forming. Have had the best luck fireforming Remington brass with zero failures if annealed first.</p><p>I only have 3 cartridges I fireform now, 22-250AI, 375 Weatherby & 338-416 Rigby Improved 45°.</p><p>I use the COW method to close, then fireform with a stout load for hunting.</p><p>I use Universal powder to fireform, about 1/3rd load of a normal powder gets it done.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 2214655, member: 10755"] Looks like brittle brass to me. It’s never a good idea to use brass fired in the parent chamber to then try to fireform to the AI. I did the same in both my 22-250AI and 257AI when I was green. Nowadays, I only ever use NEW brass and I anneal it before I attempt to fireform them. Some brass should be avoided in my experience. Norma, Federal & early Nosler brass do not like fire forming. Have had the best luck fireforming Remington brass with zero failures if annealed first. I only have 3 cartridges I fireform now, 22-250AI, 375 Weatherby & 338-416 Rigby Improved 45°. I use the COW method to close, then fireform with a stout load for hunting. I use Universal powder to fireform, about 1/3rd load of a normal powder gets it done. Cheers. [/QUOTE]
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Question about Fire Forming 257 bobs into 257 AI
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