Ridge, are you talking Numerich? 'Cuz they have a cross reference table, and the web address is gunpartscorp.com
Which JC Higgins do you have? Not all of them were made by the same company. My first shotty was a JC model 20 12ga. Still take it out after dove and pheasants occasionally. Been long enough since I looked up who actually made it that I've now forgotten again, guess I gotta go look myself... Again...