I got some interesting info this afternoon. Last month I bought a NDZ ULP can from pooty and I installed it without chronoing and I haven't been to a field in a while since money is kinda tight and I'm going to college. Anyhow, I went to my local shop to get my tonton chronoed to see if the can made a velocity difference, and it sure did. At 160 input pressure with a 10MS dwell, it chronoed at 300 fps, with a high of 308. So I dropped 20psi (140 now) with the same 10MS dwell, and it chronos at 290. I went down to 130, same dwell, and was getting 280. No FSDO, and I told the guy who chronoed it for me to get on it to check for shoot down and he said it shot great. I was just wondering if my shocker is going to be able to operate at 130 with no issues, I'm going to test it with paint tomorrow with a stupid fast ROF and see if I get shoot down. I'm curious cause shockers were intended to operate at 180-220, and mine is shooting beautifully at 140. Thoughts anyone? And I'm hoping this info was helpful to anyone.