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Rifles, Reloading, Optics, Equipment
Reloading
243 to 260
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<blockquote data-quote="Clark" data-source="post: 490185" data-attributes="member: 6600"><p>The 260 SAAMI drawing tolerances for the chamber neck are:</p><p>a) .299 - .301" at the rear of the neck</p><p>b) .298 - .300" at the front of the neck</p><p></p><p>As best I can measure with pin gauges, my 260 [long chambered at Douglas] is:</p><p>a) .299" at the rear of the neck</p><p>b) .298" at the front of the neck</p><p></p><p>I have used 308 brass, 243 brass, and 260 brass in my 260.</p><p>My experiences are consistent, but not a complete verification of the synopsis I offer here of internet folklore mythology I have read about the 260:</p><p>1) 7mm-08 brass is the best, good fit between chamber neck and ammo neck</p><p>2) 260 brass is second best</p><p>3) 243 brass is third best. It gets a donut formed at the base of the neck</p><p>4) 308 brass is 4th best. Commercial brass will work. 10% of the time there will be a nasty pressure spike from a pinched bullet. These misfits can be sorted out, turned, or reamed.</p><p><a href="http://www.saami.org/PubResources/CC_Drawings/Rifle/260%20Remington.pdf" target="_blank">http://www.saami.org/PubResources/CC_Drawings/Rifle/260 Remington.pdf</a></p></blockquote><p></p>
[QUOTE="Clark, post: 490185, member: 6600"] The 260 SAAMI drawing tolerances for the chamber neck are: a) .299 - .301" at the rear of the neck b) .298 - .300" at the front of the neck As best I can measure with pin gauges, my 260 [long chambered at Douglas] is: a) .299" at the rear of the neck b) .298" at the front of the neck I have used 308 brass, 243 brass, and 260 brass in my 260. My experiences are consistent, but not a complete verification of the synopsis I offer here of internet folklore mythology I have read about the 260: 1) 7mm-08 brass is the best, good fit between chamber neck and ammo neck 2) 260 brass is second best 3) 243 brass is third best. It gets a donut formed at the base of the neck 4) 308 brass is 4th best. Commercial brass will work. 10% of the time there will be a nasty pressure spike from a pinched bullet. These misfits can be sorted out, turned, or reamed. [url]http://www.saami.org/PubResources/CC_Drawings/Rifle/260%20Remington.pdf[/url] [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
243 to 260
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