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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
25-06AI case forming
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<blockquote data-quote="elkaholic" data-source="post: 771255" data-attributes="member: 13833"><p>Denny.....The 270 brass is better because it is .046" longer than '06 brass! When you fire form a Gibbs, or even an A.I., you lose around .015" in length because you are swelling the body size and the brass has to move somewhere. Of course, it is ALWAYS the neck length that suffers. If you measure your brass length after firing, you will find it is far short of chamber specs. This means you are jumping the bullet accross a void between the end of the chamber (neck) before it reaches the throat. This does nothing for accuracy and can build up carbon in this "unused" neck area! I only trim my cases .005" short of chamber length for this reason, and you can easily be .020" or more short when forming a Gibbs or A.I. Using the .270 0r .280 brass will eliminate this problem. Hope this makes sense. As far as powder charge, you can use the same charge in the Gibbs as the A.I. ........rich</p></blockquote><p></p>
[QUOTE="elkaholic, post: 771255, member: 13833"] Denny.....The 270 brass is better because it is .046" longer than '06 brass! When you fire form a Gibbs, or even an A.I., you lose around .015" in length because you are swelling the body size and the brass has to move somewhere. Of course, it is ALWAYS the neck length that suffers. If you measure your brass length after firing, you will find it is far short of chamber specs. This means you are jumping the bullet accross a void between the end of the chamber (neck) before it reaches the throat. This does nothing for accuracy and can build up carbon in this "unused" neck area! I only trim my cases .005" short of chamber length for this reason, and you can easily be .020" or more short when forming a Gibbs or A.I. Using the .270 0r .280 brass will eliminate this problem. Hope this makes sense. As far as powder charge, you can use the same charge in the Gibbs as the A.I. ........rich [/QUOTE]
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25-06AI case forming
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