Silly question (Gaussian/Buildup)

I'm kind of new to this IO stuff, so I have a bit of a silly question.

Main character I'm running now (Fire/Regen scrapper) has Build Up as one of her powers. I'd started slotting it with the Gaussian set.

What I'm wondering is... how does the Gaussian / Chance for Build Up IO actually work? Would it even have any purpose (besides set bonuses) being slotted in the Build Up power? Or is it meant for attacks that can somehow be slotted with Gaussian?

/confused

Slotted in Build Up, it has a small chance of going off when you hit BU.

Personally, that's where I always put it.

The chance of Build Up proc, to my knowledge, works like most of the other procs. When you use a power that it has been slotted in, it has a chance of going off and giving you a mini-build up.

So, if you slotted it into build-up, any time you fired off build-up, there would be a random chance that the proc will activate and you will get the bonuses of the Proc on top of normal build-up, a sort of 'Critical Build Up' if you will.

You could also slot it into, say, Tactics, and as long as tactics was running every ten seconds you would have a chance for the build-up to go off.

Personally, I think slotting it into build-up is a sound tactical decision, since if you've hit build-up you intend to wreck something anyway and you're probably in a position that the extra damage is going to be beneficial.

Ah, cool.

Thanks for the clarifications.