flyers, if I had scores like that and wanted an HSBC card, I'd take the chance and apply for it. Knowing that my scores would drop because of the hard inquiry. But that's just me.
Don't be disappointed though if you get approved but with a much lower cl. It just all depends what's in your credit report.
I honestly do not know if they blacklist people(for past baddies). Maybe others do, and will chime in.
Keep us informed.