Synchronistically, a few daze after Swim read this post, a friend of his brought up the same thing. Swim half-jokingly said "bring me some rigs and I'll make it happen." Well sure enough the next day the friend showed up with a couple ten packs of 1/2cc insulin syringes. Swim had just finished preparing a batch... here's the tek in a nutshell: crock pot cook of powdered mhrb in 50/50 vinegar/distilled water for a few hours, basified with NaOH, pulled several times with d-limonene and salted out with vinegar.
Combined vinegar pulls were defatted 2x with limo, rebasified and re-extracted into some clean limo, then salted back out into more vinegar to ensure absolute purity. Vinegar was evaporated revealing goo which was redissolved into 1 ounce of hot water and placed in an eyedropper bottle. 1ml of this solution was evaporated, scraped up on a razor blade, and smeared into a gelcap that had previously been weighed. The cap was weighed again after, and the weight had increased by roughly 23 centigrams.
So Swim had roughly 230mg/ml. Doing the math on this, he determined that 10 units in the syringe should contain 23mg, which seems to be a good dose. Wanting to be safe, he drew up 9 units and handed the rig to his friend, who proceeded to inject it. It seemed to come on rather slowly, he watched his friend look fairly normal for long enough that he wondered if something had gone wrong, then his friend closed his eyes, sank back in his seat, and stayed gone for roughly a half hour. He eventually curled up in the fetal position at exactly t+23min, and after he opened his eyes and began speaking again, reported a very good experience. When asked if he went to hyperspace, he reported that "no, it was more like it came here." This is very typical of mixtures that include jungle spice. He said there were beings asking him questions, but he couldn't remember what they were asking him. He totally recommended it, saying "this is the way to do it."
So then Swim decided to try it a few daze later. Not to be outdone, he drew up 11 units. He then cleared a space (Swim does this kind of thing ritualisticly, having some understanding of just what he's getting into) and proceeded with the injection.
Now here's the deal... Swim does this kind of thing with a spiritual intent. His friend was just looking for kicks. Swim has a familiar entity that comes to him whenever he does dmt, it's kind of like a guardian or something. When Swim breaks thru, it is this entity that "rips" a hole in the fabric of reality and takes swim to wherever he's going, if that makes sense. There have been times when Swim did not break thru, but this entity came and operated on his etheric field... apparently that was what he needed those times.
Well this time the entity came, but it did not operate on him... instead it seemed to be just sort of checking him out. Swim is always placed in a state of utmost awe and reverence when in the presence of this entity, it is very "humbling." Well Swim found himself asking it "Is this ok? Is what I'm doing ok?" Swim can only assume it must not have been, because after checking him out, the entity vanished, leaving Swim with absolutely nothing. That's right... one minute it felt like it was coming on strong, albiet a bit slower than when smoked... then the next minute Swim was practically back to baseline. He could still feel the presence of the molecule in him, but there wre no "psychedelic effects." Swim has experienced this before, the "breakthru denied" phenomenon. It seems to happen when something is spiritually blocking him from entering hyperspace. In this case he assumed it to be the fact that whatever spirit(s) is/are watching over him did not approve of this method of administration. As such, Swim has decided not to repeat the experiment, at least for the time being. Swim felt rather dirty during the whole thing, as it brought back old junkie associations. He thought to himself... "what are you trying to do? Get everyone shooting dmt? That's not the reputation this stuff needs to have..."
Granted, Strassman's volunteers reported amazing results. But there seems to be something about smoking it, it requires an act of willpower to break thru... with shooting it, not so much. There seems to be something dishonorable about this. It's hard to say for sure based off of one experience, but Swim did not feel good about shooting dmt, and he doesn't want to try it again for not wanting to piss off his guardian. So I won't tell you not to try it, and I can definitely tell you the method outlined above is safe (physically). But if you're coming to dmt for spiritual purposes, this may not be the way to approach it. Of course your entities may see it differently. This is not meant to discourage you from your own experimentation, only to inform you of what happened to swim when he tried it, and what his conclusions are.
Best of luck, whatever route you choose!
-Syzygy Psy
PS another possibility has occured since then... Swim put it in his right arm, having blown out the main vein in his left arm back in the junkie daze. Anyway there is some slight chance that this may account for the difference in effects, as he's pretty sure that the left arm vein gets to the brain a lot quicker. Could be that in Swim's case the dmt got a pass at the liver first, which may have metabolised it. But he doubts that is the case... he's pretty sure the issue was spiritual in nature, not physical.