Brown rock/powder heroin questions

[thegoat]

Swim has recently been getting brown rock/powder heroin. Swim has snorted this form of heroin as well as smoked it. Swim has a question on purity. The brown is in rock form before it is crushed into a fine crystalline powder. Swim believes the purity of this heroin is very low. The quantity varies by purchase and swim is sure he's being shorted sometimes. It is also sometimes already crushed into powder before swim receives it. Swim is aware of being ripped and having H cut with something.

The question is which type of heroin is brown rock/powder. What different purities there are and how to tell. The potency has varied, but after swim smokes it off of tin foil (a match head sized amount) and little to know bubbling is seen and the greater portion of the powder is left behind as charred ash. Swims most recent batch was of the lowest potency of all received. Swims main form of ingestion is through snorting, but when lower potency seemed to be the reason that way wasn't working smoking was tried and sometimes preferred however after discovering how little or not at all the substance bubbles.

Swim's guess is that because of low tolerance and infrequent usage small doses of snorted powder have worked fine, but estimates after research the large amount of charred remains after smoking it means potency could be very low, possibly in the 5% range? Swim could be very wrong and has had previous encounters that yield a much larger effect from a much smaller amount.

So basically swim wants to know what kind of heroin brown rock/powder heroin is. What is the average purity brown rock, what is in brown rock heroin besides heroin, what the purity mostly likely is, and is it safe to shoot. Swim also read you can place heroin under the skin through a cut as well and would like to know if this brown rock would be safe for that.

Swim thanks you all generously and apologizes if some of these questions have already been asked.