Hi Christopher, yes sir, this has a smoothbore barrel, so you can shoot rifled (foster) slugs with no issues, just don't shoot them through the full choke (that is the choke with 1 notch)
The cylinder choke (5 notches) usually gives best results with slugs.
Stay safe & have a great day!

You Absolutely can can, Use Foster Type Rifled slugs. And most importantly, Do Not shoot using Full Choke!! Cylinder choke would be the safest bet.

Hi Christopher and welcome. Yes Sir. Foster Type Rifled Slugs will give you the best performance/accuracy. Cylinder/Modified Chokes only and not the Full Choke. Cheers and stay safe!