I'm not sure of your formulation, but many oxycodone pills have talcum in them... and talcosis is a serious complication that can occur real quick with a bit of bad luck.
Oxycodone works when you mainline it, but it is the most disappointing IV opioid I have taken. There isn't much of a rush (at least compared to heroin or morphine), you just find that the feelings go from zero to manifest quickly - it's not intense. At least not for me. Feels pretty much like you'd sniffed it.
The best thing about oxycodone compared to most opioids is its extremely high oral BA. If other opioids had higher oral BAs I'd probably eat them too, but eating morphine or heroin wastes 60-70% of your product. Eating oxycodone wastes 15% of your product. I find it not worth it at all.