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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Neck thickness question
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<blockquote data-quote="Mysticplayer" data-source="post: 24107" data-attributes="member: 8947"><p>Please provide info on cartridge and chamber dimension. If you have a reg. SAAMI chamber, neck turning doesn't do a heck of a lot. I would suggest turning just enough to knock off the high spots on 1/3 to 1/2 way around the neck. The thicker necks will keep brass from splitting and with large chamber clearances, the thicker neck may actually improve centering.</p><p></p><p>Some will even neck down "larger" brass to increase neck thickness before turning. Would not want a neck over 20 thou thick for fear of poor bullet release. 16 thou seems to be norm for a SAAMI chamber.</p><p></p><p>If you have a tight neck match chamber, then go for 1 to 2 thou of clearance on each side of the neck. </p><p></p><p>The chamber's neck dimensions will determine the best thickness to use. Neck size if possible and minimize runout during seating. That will improve accuracy more then a few thou of neck thickness difference (SAAMI chamber).</p><p></p><p>Good luck...</p><p></p><p>Jerry</p></blockquote><p></p>
[QUOTE="Mysticplayer, post: 24107, member: 8947"] Please provide info on cartridge and chamber dimension. If you have a reg. SAAMI chamber, neck turning doesn't do a heck of a lot. I would suggest turning just enough to knock off the high spots on 1/3 to 1/2 way around the neck. The thicker necks will keep brass from splitting and with large chamber clearances, the thicker neck may actually improve centering. Some will even neck down "larger" brass to increase neck thickness before turning. Would not want a neck over 20 thou thick for fear of poor bullet release. 16 thou seems to be norm for a SAAMI chamber. If you have a tight neck match chamber, then go for 1 to 2 thou of clearance on each side of the neck. The chamber's neck dimensions will determine the best thickness to use. Neck size if possible and minimize runout during seating. That will improve accuracy more then a few thou of neck thickness difference (SAAMI chamber). Good luck... Jerry [/QUOTE]
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Neck thickness question
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