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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
260 Build ???
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<blockquote data-quote="shortgrass" data-source="post: 1148235" data-attributes="member: 24284"><p>The problem was the cartridges were just too freakin' short. They'd pop out of the mag before they had a good start up the feed ramp, thus "loosing control' of the rd. Find a follower that'd fit and work, block the mag to the new follower, open the rails with a file and then stone them smooth. Lots of hand work involved. Stand a .30/06 next to a .308 (.260, 243, 7mm/08 are the .308 case, just necked differently). The shoulder of the .308 is bigger in diameter than the body of the /06 . You can't just run a .30/06 reamer into a .308 chamber and have it 'clean-up'. The different shape of the case body and moving it forward, so that it has the proper start up the feed ramp before the mag releases it and the forward motion of the bolt takes over so that you don't have to perform 'tricks' to have a reliable feed cycle, takes time. Cartridges need to feed fast, slow and at normal normal speed of bolt manipulation.</p></blockquote><p></p>
[QUOTE="shortgrass, post: 1148235, member: 24284"] The problem was the cartridges were just too freakin' short. They'd pop out of the mag before they had a good start up the feed ramp, thus "loosing control' of the rd. Find a follower that'd fit and work, block the mag to the new follower, open the rails with a file and then stone them smooth. Lots of hand work involved. Stand a .30/06 next to a .308 (.260, 243, 7mm/08 are the .308 case, just necked differently). The shoulder of the .308 is bigger in diameter than the body of the /06 . You can't just run a .30/06 reamer into a .308 chamber and have it 'clean-up'. The different shape of the case body and moving it forward, so that it has the proper start up the feed ramp before the mag releases it and the forward motion of the bolt takes over so that you don't have to perform 'tricks' to have a reliable feed cycle, takes time. Cartridges need to feed fast, slow and at normal normal speed of bolt manipulation. [/QUOTE]
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