So long as you activate the power during the self buff period it counts as buffed - which is why long activation attacks should always be used at the end of a chain when your self buffing - total focus is good example. Only exception (i think) is rain-type powers (rain of arrows/fire, blizzard etc)- if the self buff expires during these then the damage reverts to normal.
Union 50s:
Crimson Cannon: NRG/NRG/Force
Tara Thorn: Archery/NRG/Elec
Damatria: BS/SD/Body
Defend the Earth from Aliens in my MA Arc: ID:57186
Also, interruptable powers (snipe) get the buff after the interruptable time is over, not before.
Sometimes when I have Aim and/or Build Up active and I use a power Aim and BU will end before the power activates even though i turned the power on when Aim and BU was still up.
Will that power still get the boost from Aim and BU or not?
Or more simple when are the boost added to the power, when I turn it on or when it actully goes off?