Two thoughts:

1) Ask Kevin Mock (at the range) I worked up a load for his .40S&W that is definitely into the 10MM realm. And have reloaded that brass several times now. No smilies to speak of.

2) I agree with Bob 100%. But if you get or have smileys it is not the end of the world . . or your brass. There is a thing made by most of the die companies called a "push thru base sizing die". Here is the Redding version:

http://www.sinclairintl.com/reloadin...prod39741.aspx