A Wart Hog is an A-10 with a 12’ 30 mm gun. Tank killer for sure and just about anything else.
I figure the 30 mike (and even the 20 mike which I am familiar) would kill reliably anything up to about 60 feet, and really ruin the day of larger ships up to about CVN size. (I am thinking of someone strafing a ready deck with one.)