A decent PvE example..missed the shot where I got 105k damage on a bulwark.
But, In PvP..there may be a bug...I hate to even mention it...but, it seems a bit unfair when I can one hit nearly everyone because of it. So, here it is...
the explosive ego perks and the grenadier, grenade boosts and well everything do not abide by the time duration limit. Once I get my first kill...my L0bbster(that's what I named it. ;P) becomes fully perked and bonused for each kill after that...no matter the time in between.