Steel Case FTE help

I have a small surplus of steel case 223, and every time I go to the range using steel cased I end up with a FTE. I end up needing to poke the casing out using a cleaning rod through the front of the barrel, or in one case mortaring my rifle.

I own a IWI Zion (about 5 years old). I read so much on here about steel never causing issues, any tips?

If it matters, all this ammo (mainly wolf) has some sort of sealant, and an RSO believed that was gumming up the chamber.