Hey man the reason you are having trouble finding this info is that there are so many variables. Not just strain to strain, but grower to grower . I believe 3-10 % is pretty good. But in a way its like asking how long a string is. That and many folks are going for ther best hash they can make. Yield is not in the same equation as quality. Its like that Rolls-Royce man, if you have to ask you can't afford her. LOL. Peace GS
ps. welcome to the site. hope ypu are enjoying.
Changing the color of cannabis one grower at a time.