Yes, I have and it was not at all pleasant. It took about 6 hours to kick in, the effects were terrible, and it lasted way too long. I used whole nuts, as preground loses the active princopals during drying. Try H.B. Woodrose or San Pedro if you are looking for an easy to find trip, both are much more enjoyable.
Erowid has a lot of good info on nutmeg if you are still interested.