I used to shoot those just fine, once filtered a couple of times. Not the healthiest, at least, oxynorm isn't a great one for shooting, caps, but full of excipients. Those best plugged, actual OC80s I'd bang em, if it were me personally.
If you can find them, try looking around for zomorph, morphine XR caps, when ground up theres VERY little binder in it for the weight of drug, and they filter well. Releases a good amount of the drug right away. And if you add more water, press the filter around good with something like a mortar and pestle, and leave it to soak again with more water, you get another shot later.
I get a bunch of those plus oxynorm caps from my doc every week for me buggerey knee and hip joints and really I find oxy pretty crap. Would love to demethylate it and try oxymorphone though.
Just doing my morning wake up belt of sweet Lady Morphia now, 7.5-8.75ml of saturated solution (sulfate). Or rather, just finished getting it in, right before the old man came down the stairs, finished just in the nick of time. Had to slam it in fast to do it though. Making my ears ring something tasty that did. You know your morphine is going to be a good damn shot when it makes you get that metallic ringing taste in your ears and feel it in the back of your teeth. Oxy gives sod all rush, can get an alright nod with enough oxy but theres no rush at all in my experience.
Also, oxy is piss poor in another respect, too. Namely you can't just give the XR capsule form a bit of ammonia, let it dry to give freebase contained in XR beads, then treat it with a drop or two of propionyl chloride, for XR (or rather, most likely, XR-ish) prope dope (3,6-dipropionylmorphine), or treat same with a bit of thionyl chloride for some weird fucking stimulant, that will relieve opioid withdrawal but is more like a psychostimulant and eugeroic, but with no cardio push, but which causes (at the highest doses tried, only tried IV and rectal) the beginnings of myoclonic activity in the distal extremities, although this effect is absent at lower doses. The drug itself, being alpha-chloromorphide, more usually used as an intermediate in the synthesis of desomorphine, although not tried desomorphine itself, yet.
I kinda...just HAD to see if it was active itself though because I couldn't find any reports of its actually being ingested, anywhere at all. Only stuff on its reduction to desomorphine.
So, curiosity piqued, whipped a little up, cleaned it up, and shot some test doses, and on reaching activity, found the wikipedia stating '10x as strong as morphine' is incredibly misleading, since its not LIKE morphine, or other opiates for that matter!
Whilst I haven't ever tried chlorinating oxycodone, for certain reasons, the results from acylating are lackluster.