SWIM asks this because he is a very lightweight person who wants to use as much as he needs for breakthrough but not too much. SWIM has heard of people vaporizing 30mg and having breakthroughs.

Yeap, start with 30mg, especially if one has been extracting from MHRB or P.viridis. If it's not a breakthrough dose then it's definitely going to be a immensely beautiful display of CEVs (some people call it kaleidoscope dome??) for as long as a trip lasts.

good to know because others told SWIM to shoot high like 60-80mg.. SWIM has learned lessons from other plant teachers which told him not to use more than is needed.

Well, I have to agree with them - SWIM's general tendency is to overshoot the mark, I don't know why. So if one says OK, 60mg of this X, Y, Z stuff is a good dose, SWIM's gonna think, yeah, lets double it and try!

But just for the history, SWIM's first try was with 100mg. Awesome! SWIM actually passed out before actually smoking all of it. He knows that because after coming down, his pipe had enough spice left to provide him for another decent journey (estimated nowadays as a ~30-40mg trip)

Maybe one reason for overloading is that amidst fears of incompetent smoking technique, one tries to load more than necessary to compensate for possible spice losses (burned spice, not full inhalations, etc. etc.)

I'm very lightweight and I started with 50mg. and I think that was perfect. But I think peoples lungs absorb different amounts. If the insides of your lungs are covered with tar then it probably affects how it works. I hadn't smoked for 6 months when I first tried DMT. And some people have much bigger lungs than others. We're all different.