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That's got to be a nickel plated case. I can't imagine Federal made steel cased ammo. Though they do make aluminum cased ammo so maybe I'm wrong?
I had some nickel plated brass with the red sealant around the primer just like in your photo. I sold off all the nickel plated cases because I didn't like the extra force needed to resize the cases compared to standard brass. YMMV.
I hope I'm not the only one who read these posts..... in disbelief.
Pic isn't that good. If shiny likely nickel plated and those are excellent. If dull, usually steel and not reloadable.