While I don't have a chrony I have spoken with those that do. 200 fps is about average. although don't quote me on that, I have never actually tested it myself.
Yeah it is very fast, I usually use a pull through string with old cloth attached when testing as slight moisture from breath can cause damp condensation in tube, i think everyone should do this as a matter of course after so many shots to keep things consistant,380FPS? That is blazing fast!! Nice work!
You have not been around for a while, but I have sent my darts through the chrono years back and got no where near those speeds. I was getting in the 200fps range on a good day as I remember.I'm talking lung power here and about Deano69 and Gigmaster claimed velocities. It's unfortunate that I can't post the addresses of my references.