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Rifles, Reloading, Optics, Equipment
Reloading
the dredid doughnut
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<blockquote data-quote="dok7mm" data-source="post: 1326500" data-attributes="member: 90080"><p>Just so there is no confusion, I am referring to a expander mandrel, not the button on a FL die. It is a tapered mandrel situated in a holder that screws into your press. I use the K&M setup, but Sinclair and PMA Tool also makes them.</p><p></p><p>The mandrel forces imperfections inside your neck to the outside, similar to an expander ball, but with less chance of pulling your neck out of alignment.</p><p></p><p>A bushing die forces those imperfections to the inside of the portion of your neck compressed by the bushing. That's why many use the mandrel to uniform neck interference or tension, normally .001-.003" under bullet diameter, I use .002" normally. If you are reducing neck diameter more than .004" , from fired, you may have quite a variance in actual neck tension, depending on your brass quality.</p><p></p><p>I'm getting off your original question. You have no problem unless you want to seat deeper or go to a longer bullet. I just wanted to answer your reply.</p></blockquote><p></p>
[QUOTE="dok7mm, post: 1326500, member: 90080"] Just so there is no confusion, I am referring to a expander mandrel, not the button on a FL die. It is a tapered mandrel situated in a holder that screws into your press. I use the K&M setup, but Sinclair and PMA Tool also makes them. The mandrel forces imperfections inside your neck to the outside, similar to an expander ball, but with less chance of pulling your neck out of alignment. A bushing die forces those imperfections to the inside of the portion of your neck compressed by the bushing. That's why many use the mandrel to uniform neck interference or tension, normally .001-.003" under bullet diameter, I use .002" normally. If you are reducing neck diameter more than .004" , from fired, you may have quite a variance in actual neck tension, depending on your brass quality. I'm getting off your original question. You have no problem unless you want to seat deeper or go to a longer bullet. I just wanted to answer your reply. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
the dredid doughnut
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