I have heard many people recommend using an o-ring to free float the fore-end of the NEF rifles and slug guns. Not sure what size is appropriate. Also, many recommend to grip your slug gun fore-end and pull your buttstock into your shoulder as if you were actually shooting it from a hunting position. This ensures that the recoil characteristics are the same while sighting in as in the field so that you don't get differences in point of impact.
|