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Rifles, Reloading, Optics, Equipment
Reloading
Case prep - 300wm
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<blockquote data-quote="dok7mm" data-source="post: 1622539" data-attributes="member: 90080"><p>What is the exact chamber neck dimension? And what clearance will your loaded round give you in that chamber? </p><p></p><p>My best rifles have .003- .005 clearance, with .004" being ideal for my hunting rifles. Most are tight necks or minimal and I turn my necks to get the proper clearance. In my no turn necks, I always use the FL die and mandrels to get consistent neck tension. Even with my tight necked rifles and brass turned to .0001 consistency, I have found the FL sizing/mandrel method to provide better SD/ES than the bushings, testing one against the other.</p><p></p><p>If your chamber neck exceeds your loaded neck diameter by more than .004", Redding cautions that using one bushing can interfere with neck tension and recommends using an intermediate bushing. There is also the fact that the bushing # is often +/- of what is stamped.</p><p></p><p>If you have bought your brass, seat some bullets in a few cases and measure the loaded neck. Compare it to actual chamber neck, to see what your clearance is, in the unturned state. Then you'll know how much clearance you'll have to work with when you skim turn.</p><p></p><p>It's your rifle and your decision, just trying to help.</p></blockquote><p></p>
[QUOTE="dok7mm, post: 1622539, member: 90080"] What is the exact chamber neck dimension? And what clearance will your loaded round give you in that chamber? My best rifles have .003- .005 clearance, with .004" being ideal for my hunting rifles. Most are tight necks or minimal and I turn my necks to get the proper clearance. In my no turn necks, I always use the FL die and mandrels to get consistent neck tension. Even with my tight necked rifles and brass turned to .0001 consistency, I have found the FL sizing/mandrel method to provide better SD/ES than the bushings, testing one against the other. If your chamber neck exceeds your loaded neck diameter by more than .004", Redding cautions that using one bushing can interfere with neck tension and recommends using an intermediate bushing. There is also the fact that the bushing # is often +/- of what is stamped. If you have bought your brass, seat some bullets in a few cases and measure the loaded neck. Compare it to actual chamber neck, to see what your clearance is, in the unturned state. Then you'll know how much clearance you'll have to work with when you skim turn. It's your rifle and your decision, just trying to help. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Case prep - 300wm
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