Using c25 gas with self shielded flux core welding wire

In this viewer suggested episode we run c25 gas on top of self shielded (non dual shield) flux core welding wire. What will happen? 0:00:00 Intro 0:00:44 unofficial sponsor 0:03:16 book learning 0:07:31 let’s weld 0:14:14 Inspection and results 0:19:23 Conclusion