257 WBY Cases problem

[newmexkid]

Up to this point, I have been using new WBY/NORMA brass with my 257 WBY MAG. I have 100 pcs of each brand. So, last night was my first attempt at sizing some cases. Using a Redding FL die I found the die was sizing like a bushing die. In other words, it was sizing well short of the neck/shoulder junction. It's just like a bushing die was being used. I then used a mandrel to finish up the sizing. While running the mandrel through the neck it was pretty smooth most of the way. Then it would sort of hang up. After some back-alley measuring, I determined the mandrel was hanging up right where the unsized portion of the neck started. So I guess I have a bit of a donut on the inside of the neck? What can I do to get the FL die to size the entire neck?

 

[MagnumManiac]

How have you screwed the die in?
Is it just touching the shell holder, or is it camming over slightly?
Many factors here, but most common is the fact that with a case in the die, there is a gap between the bottom of the die and shell holder. This gap is how much shorter you're sizing the case.

Cheers.

 

[Gary in MD]

Yea, I'm thinking that the die is not set up/ adjusted correctly.

 

[Lionel Boyd Johnson]

This brief article may help you set up your FL sizing die:

https://precisionshooter.co.nz/cam-over-on-a-reloading-press/#Why_Is_This_Even_A_Thing?