Hey everyone, if I'm at the table, I've got questions. I received a Case Master for Christmas this year and it has a lot to say. At the present time i'm resizing a new batch of .204 brass to replace the mushroomed brass wreck I had a couple of weeks ago. When I roll the brass on the Case Master, I get within .002 on almost every fired case. After I resize the case, I roll anywhere from a .002 to a .006. I didn't feel that to be so good. Well as clumbsy would have it, on the way back from the tumbler in the garage, I dropped one of the finished brass and put a small dent in the case mouth. I felt it was large enough that the bullet would not start, so I resized it again. I then checked it on the Case Master and noticed it rolled barely over .001. This made me curious, so I checked another finished brass which was .004, resized it, and it moved within .0015. This was the same story for a couple more brass. On the fifth one, I moved it only from .006 to .003, I rotated the brass in the die , resized it again, and got it within .002. I quit here until I figure something out.
Here is my question, whats going on?
Can I resize multiple times without creating a negative in the cases, an why can I improve the concentricity by resizing multiple times? Is my die less than perfect? Thanks guys. Larry.