Can aJC Higgins model 583.15 20 gauge shoot slugs?

Yes, the AJC Higgins Model 583.15, which is a 20-gauge shotgun, can shoot slugs, provided that it is compatible with them. You should ensure that the shotgun is chambered for the appropriate length of shell (typically 2 3/4" or 3"). Always consult the owner's manual or a knowledgeable gunsmith to confirm compatibility and safety before using slugs. Additionally, using slugs may require a smoothbore barrel or a rifled barrel for best accuracy.