I'm sure many of you use facebook from time to time, I have not seen this in any forum yet, but if it has been posted already I apologize. There are several brass groups on facebook which offer for sale or trade various calibers, including 30-40 Krag cases. I've picked up about 100 once fired Winchester cases in the past year, so it might be worth your time to subscribe to a group called "The Brass Bank', "Reloading 101 Learning the art", and "The Brass Connection". I hope that this helps someone.