the sabot principle of shotgun ammo has been around since early 70s. i have smith & wesson ammo from this period.
most euro guns from france, italy, spain,.... were smooth bore guns regulated for plain lead slug. the english still make that thing with end of barrels being rifled which is next to useless. this is more specialized gun with fully rifled shotgun tubes and is made in usa plus there are many former military people on this board which by nature tend to be very nationalistic. in aggregate this generates excitment.