Alec, this shotgun will work with slugs just fine Sir. It has a Removable Modified Choke and is Win Choke Compatible.

Alec, although you could shot slugs (replace modified choke w/improved cylinder), it is not the optimal choice for slugs. Is it even legal to use slugs with just a bead sight in your state? In my state you must use either a scope or adjustable iron sights to hunt with slugs, neither of which this gun has. I would look for something you can mount a scope on.

You could in theory use this but it would not be ideal, ideally you'd have a shotgun with a fully rifled, and either a rail, or drilled and tapped for an optic, this shotgun will require a high level of skill from you as a hunter, but will do its job if you do yours.
Browning A-Bolt Shotgun Hunter, which is no longer in production is an ideal hunting shotgun if you could find one used or on an auction site, it'd make your job much easier.
budsgunshop.com/product_info.php/products_id/77749 />Another great discontinued option
budsgunshop.com/product_info.php/products_id/89067 />Remington 870, or a winchester XSP would be good options too if you can find one will cost a little more but will likely yield more success