Long time ago I was shooting next to a gentleman who came to sight in his brand-new rifle for the coming season.
Seeing how he swept all of his fired cases onto the ground, I asked if he reloaded. He shook his head, and I ended up picking all of his brass.
He fired 2x boxes of Winchester 30-06, one box was nickel and the other was brass.
Last night I prepped all of that brass, which I kept in a separate bag. When trimming to length, I had about 1/3 of cases that were extra long and 2/3 which the cutter did not even touch.
This comes as a contrast with the brass which I fire. It always extends very slightly but consistently, and if I trim, I do by the equal amount across the board.
Can anyone explain what happened? Why do cases out of the same box, fired out of the same rifle, differ in length so much? Or does Winchester ammunition come in lengths all over the place to begin with?