They play with reload times set to 0, so this is a little extreme, but just to give an idea:
https://www.youtube.com/watch?v=C6rfXFyssbE#t=695
This game is great BTW, very playable, strange that nobody did html5 online clone.
https://www.youtube.com/watch?v=kx3ivYFY4ig#t=67
I had a couple of years at uni where we played this on LAN in one of the computer labs during every lunch break. We even made some maps!