I got around to taking 100 mg of 4-HO-McPT some time ago, and I still didn't manage to pass any kind of threshold I was first hoping for when I first got into this stuff, but I did have an experience of a kind that I'm able to appreciate much more these days and ultimately found it quite satisfying.
Essentially, it was like having the high of a 4-substituted tryptamine, particularly one alike 4-HO-MET, 4-HO-MPT, and 4-HO-MiPT without basically any of the trip, except that instead of being more like just some clean stimulation like the lower dosages, it had reached the level of a more intense but zen and contemplative headspace, so that one thing about it did have a very psychedelic feeling to it still. In retrospect, it was not unlike 4C-D in this way, which I had not yet taken at the time. I do recall feeling that it had a very positive afterglow as well.
I don't know if I'll continue pushing the dosage with this one or not, though I haven't seen any signs yet that would make me concerned for my health in doing so. I'm happy to have it already as it is either way to me though, it's not flashy but it's yet another novelty, and one that I enjoy enough.