Why was it a bad idea? What exactly happened? Pascel cards are so locked down it is quite hard to kill them with any OC you could do with software, usually it takes hardware mods that allow the gpu to pull more voltage to properly kill one with an overvolt. I would have absolutely no issue pumping an extra 30mv into that card assuming it didn't cause the card to throttle like said above.
How did you even get that card to pull an extra 30mv I thought the 1050s didn't even allow this. There is just that core voltage percentage thing, I don't think that even increases voltage, not by 30mv anyway.