Does morphine feel like Oxycontin

First of all, it doesn't. Opium kind of messes you up, but mostly just makes you feel good and high. Oxy kinda makes you feel good, but mostly messes you up.

Second, that's a terrible assumption since the most active alkaloid in opium is morphine, and oxy is derived from thebaine, another narcotic alkaloid found in opium. Apparently thebaine has stimulatory effects, which might explain why a fair number of people report that they feel energized when they do oxy; although, it might just be that they're addicted and were experience withdrawals, and once they did it, they were no longer experiencing withdrawal and had more energy.