nobody will know for sure because there hasn't been a scientific study on it yet. But you can check my "Why hash and not hash oil?" thread and I tell you in there the basic hash/hash oil THC percentages.
Id say if you use super primo buds and do it right...you can get stuff that is 60% or more thc. You really don't know how strong this is if you havent tasted...But anyways percentage issnt really important when youll see how mashed you get Ive used shitty trim and still got a solid black oil that was stronger than any hash ive bought on the street. I swear this method, its awesome...Fell in love with it and now i only smoke oil
