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Rifles, Reloading, Optics, Equipment
Reloading
Fire Forming Help
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<blockquote data-quote="MagnumManiac" data-source="post: 999698" data-attributes="member: 10755"><p>Your description is why I NEVER fireform with bullets, I use clays (75% case fill) and a twist of toilet tissue. I use 1/4 of a square for 22-250 size cases, 1/2 a square for 308/Roberts/'06/284 size cases and a full square for anything bigger. Give it a partial twist into the case mouth and poke it in with a flat ended dowl/pencil until it's just below the case mouth and is firm, it should squeak a little as you compress it slightly.</p><p>To the original question, .010" is as much as I would want the bullet jammed. There is another reason I don't like this method, it can cause excessive case stretching in some rifle designs because the case isn't fully supported. The fireforming method without bullets is gentler on the brass and will give 95%+ of chamber fill with almost 100% headspace for the next firing.</p><p></p><p>Give this a try, it may surprise you how well it works and you don't waste any barrel life.</p><p></p><p>Cheers.</p><p>gun)</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 999698, member: 10755"] Your description is why I NEVER fireform with bullets, I use clays (75% case fill) and a twist of toilet tissue. I use 1/4 of a square for 22-250 size cases, 1/2 a square for 308/Roberts/'06/284 size cases and a full square for anything bigger. Give it a partial twist into the case mouth and poke it in with a flat ended dowl/pencil until it's just below the case mouth and is firm, it should squeak a little as you compress it slightly. To the original question, .010" is as much as I would want the bullet jammed. There is another reason I don't like this method, it can cause excessive case stretching in some rifle designs because the case isn't fully supported. The fireforming method without bullets is gentler on the brass and will give 95%+ of chamber fill with almost 100% headspace for the next firing. Give this a try, it may surprise you how well it works and you don't waste any barrel life. Cheers. gun) [/QUOTE]
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