I was thinking of upping the damage too, but I already feel it's kinda overpowered by default... I mean, it's more powerful than the geth rifle and the collector rifle, even though they're supposed to be better rifles (this is playing on Insanity... maybe it's just the difficulty?).
So I just upped the max clip size to 100, and max spare ammo to 1000. Still go through ammo like a hobo at an all-you-can-eat buffet, but it's helped.
lol i hear ya.