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Rifles, Reloading, Optics, Equipment
Reloading
260 Brass neck thickness question
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<blockquote data-quote="bdcook" data-source="post: 1045663" data-attributes="member: 87926"><p>I know the subject of forming 260 from 308 brass has been covered alot on multiple forums and sites but I guess I am unclear on something.</p><p></p><p>I went out and bought a bag of new Winchester brand 308 brass. I ran 5 cases through my 260 dies and then loaded 5 dummy rounds with 123gr A-Max bullets. I measured the outside diameter of the necks and the top and bottom of the neck.</p><p></p><p>Top of the neck measured .292-.293</p><p>Bottom measured about the same .292-293</p><p></p><p>From everything I have found this is .004 to .005 thousandths under the sammi spec.</p><p></p><p>I tested a couple with a paint marker on the neck and got no major rubbing of the paint.</p><p></p><p>I did form a piece of 243 brass and it chambered very easy. the 308 brass chambers with slightly more drag on the bolt handle.</p><p></p><p>I assume that this means this brass should be good to go. I know this is not directly measuring the thickness of the neck brass so this is why I wanted to ask. Also this is not a competitive gun. I am just shooting around the farm and friendly competition with a few friends that shoot together.</p><p></p><p>Any help would be appreciated.</p><p>Thanks</p></blockquote><p></p>
[QUOTE="bdcook, post: 1045663, member: 87926"] I know the subject of forming 260 from 308 brass has been covered alot on multiple forums and sites but I guess I am unclear on something. I went out and bought a bag of new Winchester brand 308 brass. I ran 5 cases through my 260 dies and then loaded 5 dummy rounds with 123gr A-Max bullets. I measured the outside diameter of the necks and the top and bottom of the neck. Top of the neck measured .292-.293 Bottom measured about the same .292-293 From everything I have found this is .004 to .005 thousandths under the sammi spec. I tested a couple with a paint marker on the neck and got no major rubbing of the paint. I did form a piece of 243 brass and it chambered very easy. the 308 brass chambers with slightly more drag on the bolt handle. I assume that this means this brass should be good to go. I know this is not directly measuring the thickness of the neck brass so this is why I wanted to ask. Also this is not a competitive gun. I am just shooting around the farm and friendly competition with a few friends that shoot together. Any help would be appreciated. Thanks [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
260 Brass neck thickness question
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