I have a new 870 Express Tactical w/ported tactical choke. Primary purpose is home defense on property where I want the option to shoot slugs from the porch etc if necessary. Is the Rem tactical ported choke any good? What constriction is it? Should I replace it with a regular choke? What choke is optimal for 00 buckshot AND slugs? I/C or Modified? I have a Carlson's Dead Coyote (Full or maybe Extra Full?) choke for hunting coyotes. I'm assuming slugs are not ok in this choke tube?