I do understand what a bug is, the problem is in finding out how to make it repeatable if it is a bug. If only some have it then it has to lie with something you have or are doing. If it's not the perk then you have to narrow it down further. I'd start with what exact bolt action sniper rifle are each of you using, what, if any, boosts are listed on it, what grade is it, what ego rank is it.
If nothing above can narrow this down then it has to be something you are or aren't doing, I'm not saying that you can't shoot, but it has to be narrowed down and made repeatable or they can't find the problem to fix it.
Here's 3 of my sniper rifles I've worked with today, I practice my sniping in downtown San Fran and the only one that hasn't been a 100% head popper is the derailer. Sometimes it does other times it takes 2 - 3 if they're moving. Which guns are you using?
