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Rifles, Reloading, Optics, Equipment
Reloading
Expander ball questions
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<blockquote data-quote="dok7mm" data-source="post: 1474948" data-attributes="member: 90080"><p>Using a bushing die alone can really give a lot of tension variance IF you have big difference in neck thickness OR if you have brass, with different firings, mixed together.</p><p></p><p>Bushing dies work well for unturned brass if you use a bushing that will reduce the *ID* to .003 under caliber and then open the neck up with a .002" under caliber mandrel. </p><p></p><p>When using only a bushing to size the neck, the springback will be away from the bullet. Using a mandrel to expand the neck, springback is towards the bullet. The more firings your brass has, if not annealed, the more springback you have. </p><p></p><p>Both, the expander ball and the mandrel, will leave a concentric ID in your neck for seating your bullet, but it is easier to adjust tension with a mandrel, be it with a bushing die or a FL die with the stem removed. Also, a mandrel will not induce runout if in a properly adjusted die. As stated above, the FL Forester die, with the ball & stem removed, will size body and size neck ID down about .003". You don't need a bushing with it, just the right mandrel to adjust tension.</p></blockquote><p></p>
[QUOTE="dok7mm, post: 1474948, member: 90080"] Using a bushing die alone can really give a lot of tension variance IF you have big difference in neck thickness OR if you have brass, with different firings, mixed together. Bushing dies work well for unturned brass if you use a bushing that will reduce the *ID* to .003 under caliber and then open the neck up with a .002" under caliber mandrel. When using only a bushing to size the neck, the springback will be away from the bullet. Using a mandrel to expand the neck, springback is towards the bullet. The more firings your brass has, if not annealed, the more springback you have. Both, the expander ball and the mandrel, will leave a concentric ID in your neck for seating your bullet, but it is easier to adjust tension with a mandrel, be it with a bushing die or a FL die with the stem removed. Also, a mandrel will not induce runout if in a properly adjusted die. As stated above, the FL Forester die, with the ball & stem removed, will size body and size neck ID down about .003". You don't need a bushing with it, just the right mandrel to adjust tension. [/QUOTE]
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Reloading
Expander ball questions
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