quite possibly because a ball has a large volume and the impact is spread over a large area.
ever taken one to the face? it shocks you a little bit but doesn't really hurt that much.
when I was a teen at a community centre i was walking through the doors where people were playing indoor football and took one to the face just as the doors opened![]()
Try taking one to the nose or in your throat/adams apple. I've had both and the nose one left me seeing stars (rebound shot to the face at close range) and the throat one left me gasping for air.
Still a great game though.
Anyway it looks like those small metal cannisters are the ones that cyclists use to pump their tyres up, a lot of pressure in those as those bike tyres get to 120PSI.
Glad we didn't have a whipped cream dispenser. Whatever happened to using a normal one?