[Irish B]

As I wrote in an earlier post I recently picked up a red/green dot reflex sight for my tac 870. Usually when i mount a new optic i take the rifle in and have it sighted in professionally and then make minor adjustments myself. With a smooth barrel shooting different loads id imagine the variables are endless for accurate sighting in. I want it zerod in for slugs and then make adjustments as needed for other loads. Should I just take it in to have it zerod like I do with the rest of my guns. I would assume you would zero in a setup like mine at 25-50 yards?