BudsGunShop.com - Slug with choke?

Earl, yes, lead slugs will swage down on a full choke. You can fire a slug through a full choke, and it’s relatively safe (ALWAYS read the ammunition advice). However, since a full choke is narrower, it may wear out quickly or fracture with repeated use. Some rifled slugs will tell you they can be fired through any choke but mention that improved cylinder chokes get the best performance usage. Rifled slugs can be designed to deform through the narrower choke, but will lose both power and accuracy relative to a cylinder or improved cylinder choke.

Earl, yes you can. A standard full choke with standard lead slugs is safe in a smoothbore shotgun, just do not use sabot slugs.