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Rifles, Reloading, Optics, Equipment
Reloading
Can a Case be too Short?
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<blockquote data-quote="J E Custom" data-source="post: 1568937" data-attributes="member: 2736"><p>The only problem with trimming only .005 under Max is that all chambers are not equal so you must first establish the actual length of your chamber . If this is not done, any carbon build up can cause excessive pressure. I would recommend .010 less than the maximum your chamber will allow. </p><p></p><p>As to how much shorter you can trim a case before it becomes unusable in my opinion, I draw the line at .040 to .050 thousandths short depending on the cartridge design. Trimming can be minimized by sizing only enough to chamber the round. Most cartridges have neck lengths of over .300 thousandths long except some of the 22 caliber cartridges which are normally around .250, so .040 isn't much of a decrease in %.</p><p></p><p>Neck tension isn't as much of a problem with short necks as Bullet alignment is, so loading short neck cartridges requires more care when seating the bullet.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1568937, member: 2736"] The only problem with trimming only .005 under Max is that all chambers are not equal so you must first establish the actual length of your chamber . If this is not done, any carbon build up can cause excessive pressure. I would recommend .010 less than the maximum your chamber will allow. As to how much shorter you can trim a case before it becomes unusable in my opinion, I draw the line at .040 to .050 thousandths short depending on the cartridge design. Trimming can be minimized by sizing only enough to chamber the round. Most cartridges have neck lengths of over .300 thousandths long except some of the 22 caliber cartridges which are normally around .250, so .040 isn't much of a decrease in %. Neck tension isn't as much of a problem with short necks as Bullet alignment is, so loading short neck cartridges requires more care when seating the bullet. J E CUSTOM [/QUOTE]
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Can a Case be too Short?
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