I had 4 grs of tan full spectrum mescaline made from mostly No-name Bridgesii, but also some Peru and Pach.  I cleaned it up with Methyl Ethyl Ketone which left me with exactly two grams of off-white mescaline acetate (I assume, remains to be seen) and the brown gummy other 2 grams of what I am assuming are the other non-mescaline alks.  I evaporated it too and capped up the gummy clear tan results in 8 250mg doses.
I did one of those 250mg caps and this is what I found:
1) It is definitely psychoactive but it's a bit like mescaline without all of the fireworks and circus.  I saw some tracers and objects and surfaces doing the familiar psychedelic shifting.  It was intoxicating enough that even at 250 mg it would have been a bad idea to drive or mess with tools.
2) It seems to be the source of the muscle tension that often accompanies a mescaline high.  My lower back wasn't the same for a week.
3) It didn't seem to be as empathogenic as the full blown mescaline experience. A good mescaline ride will magnify emotions to a ridiculous degree in me, but I didn't notice much of that with this substance.
Found it interesting that in my batch the ratio was exactly 50/50 mescaline to other alkaloids. Before this little experiment I'd only done Cactus tea or full spectrum mesc acetate.  Now I need to clear a day to try the purer product.  
 
  My flesh moves, like liquid.  My mind is cut loose.