Why would you even ask if plugging would have a better effect, when you're still going to do it after everyone else told you to eat em? Eating them has a 87-90% bioavailability. That's insanely high for a pill. don't be so antsy for that instant gratification, and just eat them. And when you eat them with a fatty meal, or even some omega 3 caps with milk, it seems to even double the effects. Oxy has been proven to be the best when eaten (almost as good as mainlined), but yeah, you wont get that rush. Just saying, you're taking twice as much as you need to be if you arent eating them. I used to be like you, until I got an ungodly tolerance, and started eating them to save money.
Keep in mind not everyone absorbs oxycodone quite the same. Although to me and you eating them has better effects than snorting, for some people the B/A isn't so high when taken orally its more around the 50-60 percent range versus 80℅ for people like us. For the people who don't absorb it well the rush from snorting makes more sense for them because they get about the same bioavailability as they would have if they eaten it but with faster onset. Insuffalation could even be greater than oral for some people which seems to be the OP's case.