Just got a Mossberg 835 Ulti-mag Combo with a 24" Rifles Cantilever barrel in June. Topped it with a Bushnell Sportsman 1.5-4.5x32mm, and it's dead on out to 100yds with regular remington slugs, 2 3/4" I dont see a need for expensive sabots, especially when the regular slugs are dead nuts. I'll let you know how they perform Saturday