Airsoft RPG Rocket Launcher Test Fire + I get hurt with it!

We’ve constructed an a RPG / Missile/Rocket Launcher out of PVC pipe, firing a 2“ (52 mm) nerf projectile, that shoots at 60 PSI, traveling at about 250 feet per second, with an effective range of about 200 feet. I also test out myself how much this launcher will hurt from 15 feet away (point blank range)...and it HURTS A FREAKING LOT!!!