I agree with everything that Paul has said. Yes you can shoot slugs through a I/C and Mod choke. You are saposed to shoot most of them through an I/C choke anyways. Your not saposed to shoot them through a Mod choke but on the newer guns made for steel loads it dosnt hurt them at all if your using a lead slug. You just need to get a bunch of different ammo and try them.Dont over look shooting 2 3/4 and 3in of the same slugs, they can shoot very different in the same gun. I wouldnt push your shots much past 50 or 60 yards if your dont get out and practice much with them.