Rather than make the rate of fire as fast as possible, I wonder if it was based on the time a person typically takes to collapse after getting hit, exposing the next guy just in time for the next shot. Nailing that timing would give the best results with the least ammo and require the least skill to use. You could point the thing, duck behind cover and hold the trigger.
That video says it takes 4.5 seconds to shoot 6 rounds
I don’t think the auto fire gets you more than a second and a half, if that, over a standard pump
Rather than make the rate of fire as fast as possible, I wonder if it was based on the time a person typically takes to collapse after getting hit, exposing the next guy just in time for the next shot. Nailing that timing would give the best results with the least ammo and require the least skill to use. You could point the thing, duck behind cover and hold the trigger.
It is a pump shotgun configured to shoot as fast as you actuate the pump mechanism
The M97 described in the Wikipedia article somebody else referenced had a “slam firing” feature.