Slug Barrel Modification for JC Higgins Model 60 Shotgun - Expert Advice

The only way to reliably chamber shotgun slugs in your JC Higgins Model 60 shotgun is to get the barrel modified by a competent gunsmith. It is not uncommon for classic smoothbore shotguns like yours to have an obstructed bore due to the way they were manufactured - the polychoke and rib could get in the way of a slug as it's pushed down the barrel. A gunsmith can remove those features, smooth the bore, and thread it to mount a rifled choke tube that you can use to fire slugs and other specialty ammunition designed for rifled barrels.