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Rifles, Reloading, Optics, Equipment
Reloading
FL or bushing die?
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<blockquote data-quote="QuietTexan" data-source="post: 2423379" data-attributes="member: 116181"><p>On the back end yes, you can get to the same point of a certain inner case neck dimension using an FL and a mandrel. </p><p></p><p>But in terms of control over how far the brass moves you're at the mercy of the FL die dimension, and you have to either get it honed or go to a bushing to control how far down you're sizing. Final size is just as important as how far you move the brass to get to that point, and how far down it has to go to spring back to where you want it.</p><p></p><p>Bushing + mandrel is a common combination because you can 1) control the amount of sizing down with the bushing, 2) straighten any runout induced with the mandrel that 3) pushes neck thickenss variance outwards to 4) get to the ID you specified while 5) being able to quantify springback if you so desire.</p><p></p><p>You can get all of the above with other combinations of tools and steps, bushings and mandrels offer a lot of flexibility for experimenting because they come in so many sizes and are cheaper than dedicated honed FL dies and work in multiple chamberings inside a given caliber. It also might not make any difference depending on a bunch of other things like do you anneal, what are you chamber dimensions, quality of other loading processes, etc.</p></blockquote><p></p>
[QUOTE="QuietTexan, post: 2423379, member: 116181"] On the back end yes, you can get to the same point of a certain inner case neck dimension using an FL and a mandrel. But in terms of control over how far the brass moves you're at the mercy of the FL die dimension, and you have to either get it honed or go to a bushing to control how far down you're sizing. Final size is just as important as how far you move the brass to get to that point, and how far down it has to go to spring back to where you want it. Bushing + mandrel is a common combination because you can 1) control the amount of sizing down with the bushing, 2) straighten any runout induced with the mandrel that 3) pushes neck thickenss variance outwards to 4) get to the ID you specified while 5) being able to quantify springback if you so desire. You can get all of the above with other combinations of tools and steps, bushings and mandrels offer a lot of flexibility for experimenting because they come in so many sizes and are cheaper than dedicated honed FL dies and work in multiple chamberings inside a given caliber. It also might not make any difference depending on a bunch of other things like do you anneal, what are you chamber dimensions, quality of other loading processes, etc. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
FL or bushing die?
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