I just won a shotgun from the raffle at sub zero fallout 2 and it shoots like 20 fps to high for cqb. The first three shots from the chrono said a constant 340 the other 3-4 were around 370. How could I fix that?
Audentes Fortuna iuvat - Fortune Favours the Bold
-Thunder Cocks Member
Drill the cylinder so that the port is slightly further forward. Repeat until the FPS is where you want it. This reduces the amount of air that's compressed. I've never tried it before, but in theory it should work. Or, if it uses standard AEG spring; buy a new spring for it. Is it a tri-shot?
Shameless plug for my airsoft chrono calculator, useful for converting Joules to FPS/MPS and determining what FPS difference there would be assuming no loss or gain to Joule creep.