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Rifles, Reloading, Optics, Equipment
Reloading
243AI question on fireforming
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<blockquote data-quote="338hammer" data-source="post: 186997" data-attributes="member: 10182"><p><strong>243ai</strong></p><p></p><p>I am thinking that if one has a tight chamber then one has what could be called a benchrest quality chamber. When you say tight we really do not know what tight is unlee you say its leaving fine powder from the case on the bolt head. Maybe a bolt smear on the head of the case.</p><p>In any cartridge if its tight, screw the die down tighter to the shell holder until the issue goes away. If the issue does not go away call your smith.</p><p> </p><p>Set back is normal when forming a factory case to an improved chamber. After the set back/headspace is correct then I use a neck die only. Careful about going to far in the set back as one can bulge the neck/shoulder juncture and make a tight fit as well. Typically when fire forming for the break opens I will have to set the shoulder .015-.020 back.</p><p> </p><p>338</p></blockquote><p></p>
[QUOTE="338hammer, post: 186997, member: 10182"] [b]243ai[/b] I am thinking that if one has a tight chamber then one has what could be called a benchrest quality chamber. When you say tight we really do not know what tight is unlee you say its leaving fine powder from the case on the bolt head. Maybe a bolt smear on the head of the case. In any cartridge if its tight, screw the die down tighter to the shell holder until the issue goes away. If the issue does not go away call your smith. Set back is normal when forming a factory case to an improved chamber. After the set back/headspace is correct then I use a neck die only. Careful about going to far in the set back as one can bulge the neck/shoulder juncture and make a tight fit as well. Typically when fire forming for the break opens I will have to set the shoulder .015-.020 back. 338 [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
243AI question on fireforming
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