Expected it to be more OPERATOR. But...
First off, this game should have been QC'd with the terms and some grammar more than it was. You don't chamber an empty shell, you eject it. Muzzle Brake. The voice actor reading was pretty decent, though, say, if it were me, I'd have done it with a slightly more militaristic performance, more like a drill sergeant. The guy was a little too low-key, too laid-back. Too much of a hippy. But this is simply my opinion. His performance was good, I just disagree with his choice of performance style.
I'd have also liked to have to lead the target, rather than put mouse on head and click, seeing as snipers tend to be about a mile away from their targets. This is more "Designated Marksman: The Game". Also, neither DMs nor snipers use laser sights. EVER. Gives away their positions.
I like the concept of trying to be real like this, though. Next time you want to make a gun-oriented game, I'd gladly help the realism factor.