Follow-up.
RCBS called me back and asked if I'd mind sending the sizing die in to them for inspection before they actually sent a replacement.
They didn't make a firm statement regarding what they think the issue is, but after some conversations, it looks like the die was necking the brass down to way below spec. I sent them a photo and that's when they asked for the item back.
I don't know how the RCBS dies are manufactured, but if they're modular and have inserts for the neck, I guess it's possible they put something near to a 6.5 neck insert in there (in a shameless attempt to make me adopt a Creedmore caliber of some sort).
In any case, I have something coming back from RCBS today or tomorrow, so we'll see what the outcome was.
RCBS called me back and asked if I'd mind sending the sizing die in to them for inspection before they actually sent a replacement.
They didn't make a firm statement regarding what they think the issue is, but after some conversations, it looks like the die was necking the brass down to way below spec. I sent them a photo and that's when they asked for the item back.
I don't know how the RCBS dies are manufactured, but if they're modular and have inserts for the neck, I guess it's possible they put something near to a 6.5 neck insert in there (in a shameless attempt to make me adopt a Creedmore caliber of some sort).
In any case, I have something coming back from RCBS today or tomorrow, so we'll see what the outcome was.