ndanger I gotta give 69ron's extraction TEK mad props. This TEK gives good yields and potent product provided you have a quality source material. I've got some T. peruvianus that has been giving up 2.5% mostly mescaline acetate. Can you say happy! You can easily convert acetate to HCl in this TEK if you were not concerned about the "food grade" nature of the TEK. I've considered using HCl for this TEK, but the acetate salt hasn't been giving me too much trouble giving consistent doses and quality product.
Mescaline is one of the most rewarding chemicals I've ever had the pleasure to work with. Pleasant and fairly easy under 400mg for this experimenter. One caveat is that I would start my dose at 150+mg to get an idea for what you have. Most people are using T. pachanoi of unknown quality and there tends to me many more alks in this variety. Dosage can vary greatly. If you find a good source for T. peruvianus your extraction should be primarily mescaline. If you are experienced at extractions (mimosa, harmaline, etc.) you should have no problem. The main problem with the acetate is it's stickiness. IMO, it's really no more difficult to handle than DMT freebase.