Hopup off equals a higher fps doesn't it? I thought you cheat the chrono by turning it all the way ON?
I think Steve was trying to say to measure the energy from the properly tuned system to ensure it's safe (hence the correct weight and hopup settings) instead of just going by pure fps limits using 0.2g.
Primary: Custom VFC M4 - KJW KC02
Secondary: Custom TM PX4 - KJW Mk1 - KJW M9
Camo: Pencott Greenzone - Pencott Badlands - MARPAT