Skratch Staff/Gun and Ebon/Abyss Combo

[oopsmash]

Can anyone tell me how to do this combo? Im still confused on this loadouts sometimes my staff takes too long to procs and sometimes the armors wont procs too. Thanks in advance.

[LugiaBeatU]

In my case i charge the basic attack from gun against boss until it procs and then i quickly change to Skra staff and when it procs i switch back to skra gun and spam basic attacks
Use it with energize ultimate