First, DO NOT HEAT COCAINE WHEN PREPING FOR A SHOT! heating does nothing to "sterilize" it or any such thing - the only benifit is that heat can break down solids and help it all disolve a little easier, HOWEVER, I DO NOT recomend you use any heat with cocaine - you don't need to, cocaine will disolve in cool or room temperature water, so there is no need to heat it.. in fact, heating may actually help to disolve some solids that would have otherwise remained solid, then have been caught in the filter .. so all ya gotta do is add yer water to the powder, then stir - if it didn't disolve then it needs to be tossed out! Alright, we all learned something? Do you heat coke? No, you dont! in fact, use ice cold water for a really groovy feeling when you inject!
Now, for a dose - it would be a lot harder to actually "overdose" when yer shooting coke.. as long as yer not speedballing then you can take a fairly large shot - no matter how bad it is, you're better in a couple minutes... of course thats not to say you should boot 1/4g for yer first shot, but you can use, say, 1/3rd or even 1/2 of what you would snort - remember, you "get it" your first shot, everything after that is just trying to come close to it... so make that first one enough to make you puke, shit, then passout (if you're really lucky it wont be in that order) ..
So, here is the walkthrough...
1) Put coke in spoon, use about 1/3rd what you would snort.. not some pussy line, but thats 1/3rd of a GAGGER!
2) Draw up plenty of cool water, spray coke...
3) Stir good.. the cocaine will disolve, anything that doesn't is not coke!
4) filter that negro like you're life depended upon it ...
5) Push all air out of rig and then dip the needle in some alcohol, this can prevent brusing..
6) BANG!
7) Wait 2 minutes and then load up another! Remember, the cocaine can cause a constricting of the veins so you MUST ALTERNATE INJECTION SITES!