I've never understood why neither of these one shot. They both require more work to activate than shoulder charge and hand held supernova, yet they can't one shot in the crucible like the others can. All supernova needs is charging up a grenade, and all shoulder charge needs is a couple seconds of sprinting. Both tempest strike and ballistic slam require the same steps for shoulder charge + an extra step. For tempest strike, this is sliding. For ballistic slam, this is jumping. My thought process here is that since they are basically shoulder with an extra step, maybe they should be able to one shot guardians like shoulder charge can.