I haven't done an extensive range test, but at 40psi it chucks an AA battery more than 100 yards (went into woods, lost track of it) .
-Chamber: 3' of 1" (copper)
-Barrel: 4' of .5" (copper)
-Valve: 1/2" QEV, Mfd. Schrader Bellows, Blowgun-exhausted
-Loading style: Breech loading, union-held
I love shiny copper.