Don't really have a lot of experience with rifle slugs but my post can work as a bump I suppose. I live in the mountains of North Carolina so everything is basically in bow range anyway so i'm just shooting a smooth bore barrel with a tasco red-dot scope. It's held up to the recoil of ~25 2-3/4 slugs and maintained zero so far, sighted at 65 yards. Basically I only run that configuration from a week before deer gun season to the last day so I kinda went cheap because 75% of the year my gun is doing other duty. Good luck with your search for optics.