I thought that you don't have bullets for the sniper in ut2k3 but an energymeter. Fire 5 shots and the meter is drained and than you have to wait a minute or so
Offcourse they make the linux server software, but there is one thing that may destroy oca in UT2k3. The sniper is altered....... Now you can shoot only five times and then you have to load it up agai ...