It has been a really long time since I have done nutmeg, but I have to say I never really got much out of the experience. I would go to my local grocery store buy the metal can of whole nutmeg and grind them down myself. I weighed about 185 lbs and was over 6 foot tall. To consume them I would scoop a pile up on an index card dump it in my mouth and then wash it down with a drink of pepsi. I was 18 years old on probation/house arrest and was attempting to get high without going to jail.
Ten grams with no noticeable effect.
Fifteen grams amounted to drowsiness I slept for a long time and when I woke up I felt good despite the fact that I was in serious shit.
Twenty grams resulted in 1 auditory hallucination (I slept upstairs my mom's room was downstairs and I heard her call my name. When I went to see what she wanted I saw that she was sound asleep in bed.), drowsiness, slept for a long time, and woke up feeling good again.
I tried to substitute nutmeg for smoking marijuana, but it did not give me the effects I was looking for and I ended up smoking pot anyway.