case neck sizing

[osammy1]

Would there be a problem with neck sizing after full length sizing and then resizing again.

 

[jpx2rk]

You are overworking the brass for one thing. Why are you wanting to do this, or why do you feel you need to do this much sizing of the brass?

 

[PopCharlie]

I think you will have inconsistent neck tension, from expanding the necks multiple times.
PopCharlie

 

[rwj]

Would there be a problem with neck sizing after full length sizing and then resizing again.

Sizing the neck in multiple steps is not uncommon, especially on cases fired in chambers having excessive clearance. Curious why one would want/need to use a full length die multiple times?

 

[Dusty Stevens]

Just use a fl bushing die- one pass and keep moving.

 

[Straightshooter1]

Would there be a problem with neck sizing after full length sizing and then resizing again.

Hmmmm??? It depends a lot on the details. . . very specific details.

Depending on the details, most likely you're working the brass more, which workhardens the neck exposing it to possible premature splitting. Also, the more you do to the neck like that, the more you are likely to effect the concentricity to where it's not as good as it might be from just the FL sizing.

FL sizing without using an expander ball and then opening the neck with an expander mandrel to the size you want is often found to produce excellent results. Or just neck sizing with a collet die and being aware that the shoulder will eventually need to be bumped back to chamber the cartridge.

 

[divingin]

Would there be a problem with neck sizing after full length sizing and then resizing again.

To what end?

You should only need to size to get the case to fit the rifle it's going to be fired in, and to hold the bullet in place. If you don't obtain that on your first pass, your tools need to be looked at to figure out why.

Assuming your FL die is a normal consumer die with expander, your first insertion will size the body and size the neck too small. As the case is pulled from the die, the expander opens the neck up to your final diameter. Now you're planning to neck size it, but in theory the neck is already set, so what is that going to accomplish? Then you're going to resize it in the FL die again? The body is already sized, so not very much will happen there. The expander will slightly open the neck up (springback amount) before the neck gets sized too small again, then gets re-opened back up by the expander.

I really don't see the point of this.

 

[swd]

If your going to do that loose the expander ball and use an expander mandrel after FL sizing.

 

[Iowa Fox]

you might consider a Redding body die with a Lee collet neck sizing die.

 

[D-4297]

To the OP : I'm going out on a limb here and "assume" ( yeah , I know ) that you may be new to re-loading from the question you've posed . As a retired Tool-maker , I can offer a very simple piece of advice , when it comes to working metal . Less is More . Meaning ; the less you move metal of any kind , in any direction , the better , for the consistency and resilience of the metal . This issue has been discussed and debated , ad-nauseum here , but one conclusion has become accepted by the over-all majority . The lesser amount you move brass ( shoulder / neck area ) the more consistent your loading practices will become . Keep it simple . Keep it consistent , and it will begin to show up on the target .