I got a couple boxes of factory 380 for Christmas from non-gun relatives, so I know they just bought them at Walmart or wherever. I had just sold my last 380, so at the next gun show I went to trade them off for 9mm, thinking a dealer would jump at that.

The guy opened the box, took one look, and asked me if they were reloads! He pointed out that about 1/4 of the rounds had a different colored primer (silver vs gold). I knew they couldn't be reloads, always wondered why that would happen.