@ Charizard92:
The zoom isn't that big of a plus, really. Or at least, I've never seen it as a 'this is useful' thing...just more of an 'alright, I may use this one per movie or so' type deal.
'Fast reload...' I don't get what you mean. It reloads quickly, sure, but so do all the other weapons (and the shotty can fire without reloading a full clip, meaning if you're smart about it, you NEVER have to reload a full clip).
High power, accurate and piercing zombies are all valid points, definitely.
I'm not sure that the rate of fire is slower than most, either. I mean, compared to the automatic, sure it is, but I think it's about the same rate as the auto-shotty.
It's not that the sniper rifle's a bad weapon, it's just that it's a 'meh' weapon; the shotty is a shot of pure destruction in whatever general direction you're shooting and the assault rifle fires quickly and accurately. The sniper just looks to be the middle ground...that not good middle ground. :-(