I have an Ithaca Deerslayer rifled slug gun that will put most any saboted slugs into a 2.5" group at 100 yards. The newest slugs are approaching 200-yard effectiveless although I have no experience shooting at that distance.

My personal preference is for low power variables such as 1-4X or 1.5-5X. The slug gun is a short-range gun and there's no need to put the Hubble tekescope on it.

When I started hunting in shotgun-only counties in 1961, current shotgun performance was a fantasy well beyond attainment with the equipment then available.