I needed to shake the dust off my reloading equipment after a year of no use, so I decided to load up a batch of 45 ACP last night. I like to load 50 rounds at a time, using like head stamps to eliminate case variations in testing my loads for consistency. I already had about 15 Federal cases primed, so I started digging through my box of cleaned and prepped cases looking for more Federal cases to complete the run of 50. I have a total of about 300 or so cases for 45 ACP, and I was having trouble at first finding Federals. While sifting through the box, I finally came up with 50, but I got to thinking it was wierd because I knew I had plenty of Federals, so I went through them all.
What I discovered is that Federal cases are heavier than all the others - to the degree that they move to the bottom of the pile during sifting, much like gold in a gold pan. I found my 50, then went through all of the remaining cases, trying to sort out all of the brands. I wound up with about 60 more Federal cases, all at the bottom of the box.
Anyone else ever notice this? I wonder what Federal does differently. Dimensionally they are the same as the others. (Obviously)