Don't snort PERCOCET!!! wow that's terrible for you. If your only able to get percocets and have no access to Oxycodone IRs aka Roxy, just take them orally! All that APAP will FUCK your nose up, and also if taken in large ammounts orally without extracting the APAP via a cold water extraction, you will fuck your liver up too! If your planning on going over 20mg, which it sounds like you might have to do in order to feel it, try to get some Oxy IR 30s or 15s(they also come in 5mg,10mg, and 20mg, but aren't as common in those sizes IME) without the APAP in them, like percs have, and you can do whatever you want with them! literally they work like every ROA there is, you can even smoke oxy like heroin on foil if you wanted and it definitely works, albeit not as efficient and its much more addicting like IV!! It was a bit better with the old school OxyContin OCs, they smoked just like Black Tar heroin, but Roxys work too.. however, that is the least efficient method overall, just good for a instant onset and short punchy high, kind of like a fraction of IV, but still nowhere near 100% BA that IV oxy has(which I also don't recommend, IV)... Even though Roxy can be done every which way, I would still just take them orally, plug them, or at the very most sniff them, which all work great with oxy (not Percocet ill say again!)and then you can take 30mg+ however you would like, without destroying your nose, liver, etc. I wouldn't go any further though after trying this though if possible or at all even just stop now and forget it, oxy addiction is a real nasty bitch! no joke, its a serious drug with a serious addiction potential, but if you must continue... be careful, be smart, and again don't snort percocet, please, just save the sniffing for roxys or if your not in the US and have access to old formula OxyContin OCs or generics of that formula, they are even better than roxys to me..