|
The old shoulder becomes the new neck. The resizing die makes it happen. Calling it "flow" or not doesn't matter.
Depending on the parent brass, the metal in the shoulder could be significantly thicker than normal neck thickness (around 0.012"). The step (hopefully it is acceptable term) is clearly visible, so it could be as much as 0.005" thicker if not more. That increases the neck diameter by 0.01". I wouldn't be surprised if it causes chambering problem. Worst case could be a dangerous donut, if the bullet is seated low and you force the round to chamber.
I don't get how firing can make that additional brass disappear.
-TL
Sent from my SM-N960U using Tapatalk
|