And yet, HD may start or end up in your yard, or across the street, or down the block in the neighbors yard. Or the break and rake crew might have a sentry in the get away ride.
If you miss with one round of gauge, that is 20 percent of your ready ammo gone. In the gauge that means four more chances. In the M4, that means 29 more chances. Assuming you hit with all five, that is still only five bad guys. With the M4, even firing pairs you can put hits on 15 guys before going winchester.
If you learn how to run the carbine from anybody decent, you can spread 30 rounds on plenty of dudes in a similar time frame.
With the gauge, you need to don a chest rig plus the shotgun to get 30 rounds. With the M4, you simply pick up the carbine.
I have yet to be in a spot with my M4, and think, "Man, I wish I had a freaking shotgun in my hands" There have been a number of times that I have had a gauge in my hands that I have thought "Man, I wish this was a M4 right now."
The one time I had a phucked up AR (It was an pool issued Bushmaster, go figure) in my hands, I fervently wished for another M4. It was a burglary call and it was thought dude had bolted out into some brushy green space with a ravine behind the RP's house. I did not want the "fearsome" power of the gauge that was sitting in the rack, next to where the POS Bushmaster had come from. I needed a bright light and the ability to control 85-135 yards. Even slugs would not have been the best answer.
The search ended up in some out buildings, and either would have worked for that, but a working carbine covered the whole spectrum. Shenanigans...
The shotgun is great in close fights and on the range, but all purpose fights favor the carbine.
Instinctively, the gun banners realize this as well. The bans tend to target the most effective tools, and ignore the less efficient ones.