Unsized new starline nickel = 0.421"
Sized new starline nickel = 0.4165" to where the sizer stops.
The die in question does look weird. The carbide isn't shiny, and actually looks quite pitted under magnification so I'm thinking there is something wrong with the die. I'm going to contact Redding.
If anyone here would size a new 10mm case and tell me what it sizes to, I'd love to see what someone else's number is.
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