Re: Southern Corn Whiskey
Corn whiskey can be bottled at 80 proof or higher. It can be aged in either new uncharred barrels or used barrels that have been charred.
Re: Southern Corn Whiskey
And since used bourbon barrels are abundant, corn whiskey if it's aged at all is usually aged in used bourbon barrels, hence previously charred but used, and not new uncharred barrels, which are a lot more expensive.
Mellow Corn, a Heaven Hill product that is probably the best known aged corn whiskey, is available as a bond, and that version is 100 proof and at least four years old. There is also an 80 proof version, which I presume is just the bond diluted.