Theres actually a way to do it.
If you've played CSS you know of the AWP (L96 Sniper rifle) AKA NoobToob
In CSS, to make the animation for the bolt reload go away, you can press Q to switch to your pistol and back to your AWP faster than it would take to let it reload.
In BF2, there is a similar glitch. You need to use your F Key to switch between weapons fast. I hit it 4 times to get back to my main gun which is faster than letting the bolt reload on the sniper.
I haven't tried it in a while though, they might have patched over it