Why would he be resizing "new" brass?
Because I don't trust the brass when its brand new... I've had bags of brass from manufacturers, in various calibers.. Some were perfect and resizing them gave NO resistance whatsoever... yet another batch from the same manufacturer in the same caliber, gave plenty of resistance.
Conclusion, guess some of their manufacturing tools need periodic adjustment that doesn't always get done, when needed.
It doesn't take much time to resize new brass, vs loading it up and then finding it doesn't chamber or feed.
I'll take the first situation vs the second., any day of the week.
