I successfully completed a Longstrike with a BuzzBee Berserker air tank (credit to Nerfomania) and PVC breech that breaks at the barrel attachment point. Me and a friend of mine have been doing 1v1s with this and my Caliburn and right now I'm working on a Longshot with a titan tank and PVC breech to make the reload time and velocity a little more even.
Now I am aware that these blasters can be dangerous and should never be used without eye protection. If I had to guess my Longstrike shoots upwards of 250 fps (I don't have a chrony). He and I have a lot of fun with these "high-powered" blasters because the engagement distances can be much further than with other modded blasters.
How does the community feel about this kind of thing on a larger scale? Are there wars set up specifically for this kind of high powered stuff?