I bought .356 by mistake with a little help from an un informed store clerk. I wanted to shoot them in my .357 Sig.which takes a 9mm bullet. I called Hornady and was told that it was OK. I Emailed them the next day and they said don't use them. What do I believe? Don't use them at all, or just use them in 9mm Luger. Are they just made for a.38????