I have recently acquired some reloading bits and bobs to replace my trusty lee handloader (which I am still using!)
Lee press (yes I know!) and RCBS FL and Seating dies, Norma brass
I have not needed to or tried to reload with it yet as I am still just getting set up and used to the idea of using a press.
posted a question about the seating die and the crimp action it imparts in another thread but this is vexing me!
The FL die was fine and I test sized a couple of old (lubed) cases and deprimed/sized them perfectly well.
on swapping the die back in after practising some seating it didnt do the resizing as before.
The case is very tight on the final 1/2" and it created a ring on the shoulder. Neck size appears fine and the shoulder is in line with other cases
I have also tried with the decapping pin and expander pin removed and it did the same.
The top of the die has a screw fitting which doesn't appear to move on mine, I am not sure if it is meant to and whether this would impact the symptoms I have
I mean the second knurled fixture on the bottom die in this pic:
have inspected the die internally as best I can and it is clean and clear, cases have been lightly lubed (inside and out).
I did have a thought that I may have run an already resized case back through twice (in error whilst playing around) would I get this? (ball pushing neck down slightly into case meaning it was tight on upstroke leaving the ring mark?)
Pretty sure this is what has happened but thought I would ask!
Seems fine now so I am just going to leave it alone!
this is the normal neck after resizing:
This is the one that has a slight bulge and clear witness mark:
My expander/decapping pin has a gap with exposed threads between main pin and expander. this seems a bit of a pants design. is this normal and is it designed like that for a reason?