The dialect i grew up speaking is a Southern dialect, intersection of East Virginia and Appalachia. Our school labarian read us poims, and iron was pronounced as arn.

I still find it hard to pronunce iron 'correctly', thoug I have learned to broaden the ar to ir, where that i is pronounce broadly as southern-style I. My stanard speech pattern is still notably Southern to people not from here, to the point that sometimes people in NYC and Boston have trouble understanding me.