you need a rifled barrel to take advantage of the sabots. otherwise just wasting money if you are shooting them out of a smooth barrel. i love the 20 gauge 220f. for your encore you can get a 20 ga barrel with a set of chokes that will take care of your turkey and small game. maybe a rifled choke tube at least that will help impart some sort of spin on the slugs. personally i have never used a rifled choke but thats an option if you only want to buy one barrel. it may shorten your effective range so something to look into. i have a dedicated slug gun and then other guns depending on what im going for. hope some of this helps