Erm, with no targeting cursor, unless zoomed, you should be laughed at if a n00b sniper kills you at close range.
Anyway, sniper rifles are not all bolt-action (of course, that gets into a realism debate).
I know, replace the sniper with the Quake 3 railgun. That way, if you miss, you're never going to be able to live to take the second shot! (4 second cooldown time). Sorted, another class nerfed.
I am the definition of your defeat.