I was talking with a couple of other shooters I know and one of them mentioned that he needed to pick up some more Federal primers because that's all he used for SD loads. It made sense considering that they are supposed to require a lighter strike to ignite. I have even seen spring manufacturers recommend only Federal primers when using their lightest springs. The question was raised however that if softer primers are easier to ignite then why doesn't everyone else do the same. Gotta be a reason right. None of us were sure what the real reason would be (some pretty good guesses but no real answers). Anyone here that can factually answer that question. Or is there no reason for it and it's just the way things turned out.