Forget the APAP...
Think about how much powder you're snorting in relationship to the oxycodone. You're talking about 5mgs out of a pill that weighs between 400-500mgs.
Despite being disgusting because of the APAP drip, your nasal passages will be entirely coated with insoluable material and you'd probably only assorb maybe 2.5mgs of oxycodone at best fast enough to get high off it.. but of course being such a low dose it's hardly going to do anything anyways.
I know this might come as a huge shock to some of you, especially the suburbanite wannabe hardcore druggies, but sometimes you can take a drug prescribed by a doctor and get high off it through it's intended method of ingestion. Oxycodone is an excellent example of this. The only advantage snorting oxycodone has over taking it orally is a faster onset, 5-10 minutes versus waiting 30-60 minutes. But then again you get a little more bang out of eating it anyways, and a slightly longer duration.