Originally Posted by pestobanana
Your gun is not working properly.
Is your hop off? Your BBs may not be locking into the chamber.
I like that answer though the hop is at ~50%. I should really add some context...
The gun is the P90 I have other threads on and is using the stock CYMA spring with just over 1.5 coils cut. Given the stock FPS was ~400, I tend to think that the ~260 FPS on semi is accurate. But if that's the case, how in the heck would it do 385 (readout)? Unless of course the semi shooting is hosed and firing much lower than it should consistently shot to shot.
To rule out the chrony itself I'd have to test with my other AEGs on full auto. I should do that -- will report back.