Well now that I've read the convo, I will give my input lol I have lived all over the US while being on opiates, mainly H. have now been on and off bupe for 4 years, latest has been longest at 1.5 yr run of nothing but bupe, hence the wanting to get a buzz post, but in my experience I've mainly cold shot powder, cooked tar and rock. Rock I've also cold shot but as mentioned above, it's a better high when cooked down slightly. I have NEVER heated my stuff up to boiling, even tar, it will bubble a little, but not vigorously. Imo, I prefer a cold shot if it's possible, idk if it's from habit, how I was taught or just laziness, but it's always worked fine for me with NE (Michigan, New York, etc) dope. In AZ or CA I would only find tar which I would ALWAYS cook, but that shit just isn't that good. NE has MUCH better product than SW imo, but to each their own. But if you're going to heat your dope, I suggest a low flame and as soon as you see bubbles forming, take off the heat. Mix a little with plunger or whatever, heat a little more if necessary, let cool, then plug. Just my opinion from my experience, but again, to each their own.
