I tried a few different things on mine with no luck, I believe that’s the oarkerizing you guys are talking about. Paint stripper, 1850, acetone, nothing will touch it.
Be forewarned, what some people think is bbq paint isn’t actually. I have one that looks like it’s bbq paint but it’s more of a baked on finish or parkerizing, it’s hard and tough. Solvents won’t strip it off, I’ve seen the peeling flaking bbq paint before and mine is not it.
If I was going to strip mine it would need to be media blasted to get it down to bare metal.
The metal under that paint is likely pretty rough. Keep it for a shooter or trade it for what you're really looking for.