Shotgun Barrel Hot-Blue Options

Picked up a old Ithaca M37 16ga. Unfortunately, the barrel had seen the inside of a moist gun case for a little too long. During my tear down and cleaning I decided the rust pits were too much to bare. The barrel has been sanded and prepped but my cold blue attempt didn't quite give the results I wanted.

Looking for suggestions of someone is the front range area who can do a hot blue job. Not looking for perfection and total restoration but a good durable finish at a decent cost for a 50 year old good that will see field use.

Thanks in advance. - Brad