Not that anyone asked but its raining preventing me from working on my outdoor to do list.
Me thinks Dodec is talking about marksmanship, the second shot and survivability.
I would guess that the Mossberg Cruiser has about 5x the felt recoil of the M16. None of the gases/energy is used to cycle a round in the chamber plus it has a poor weight to powder ratio.
The Cruiser is definitely a punishing gun... Years ago some friends and I would hand load 300 Winchester Magnums ( plenty of recoil ) to near maximum pressures and shoot in long distance competitions. After firing a few boxes of twenty rounds we would start to get a little flinch prior to squeezing the trigger and accuracy would go in the crapper. For comparison, when shooting a Cruiser for the first time I wanted to throw it on the ground after 5 rounds, it hurt
Unless someone is just having fun at the range, the Cruiser should have a laser mounted and held with the upper arm perpendicular to the gun and the forearm parallel to the gun barrel. That hold method allows for a faster and more accurate second shot. Physical discomfort from felt recoil isn't really a problem in a close range tactical situation thanks to adrenaline. But, felt recoil is a problem if it effects speed and shot placement on subsequent shots.
Curious, how come you guys use slugs instead of buckshot for short range protection?