I have to use a shotgun or muzzle loader for rifle season in my county. I don't have a muzzle loader, so I'm stuck with a shotgun. I would rather use a slug but I don't know what to do about the choke. The gun is a Weatherby PA-08 (http://www.weatherby.com/pa-08-upland.html) They only sell the three choke that come with it ( IC, Full, Mod)

So what are my options? Is it safe to take the choke out and shoot that way? Will another brand fit that has a "dummy" choke?

Thanks!