Being the impatient individual I am...While I was waiting for responses yesterday (5 minutes after my post) I did a small 7 gram batch using some street weed. I added the bud at 350, it sizzled, but no big vape cloud, lol. I lowered the heat and simmered that for a couple minutes. The resulting caps are weaker than my 1st batch, but still work . (1st batch was ultimate grapefruit). I will be doing another batch today at lower temps I will stay between 250 and 275 using the same amount of street weed, and then compare. BTW this street weed looks great, even under the radioshack scope, loaded with trics and red hairs... if it wasn't compressed and seeded the bag appeal would be comparable to the buds I grow. That of course is until you smelled or tasted it. I did a couple of vape hits though and copped a good buzz...so, "it's in there" :) . I am reasonably sure the lower temps will render better caps, but I will let you know for sure.