The article contradicts itself in at least one place. With regards to capacity and reloading. Also it’s worth pointing out his time differences between the two shotguns were at Max .2 seconds.
You guys probably don’t know this about me but I really like shotguns. I own a bunch of shotguns and I drill with shotguns more than any other firearm.
I don’t disagree that lighter is probably better for a lot of people. Particularly in a protracted gun fight. But then in a protracted gun fight you’d better have it slung and personally I’ll forego a couple pounds for double the round capacity every single time. Realistically, most HD situations are not going to last more than a few minutes though.
Everything is a compromise. Most of the time a 16” double barrel 12 gauge is gonna get the job done. The compromise is that if you have more than one determined intruder you’re screwed. On the other hand a KSG25, fully loaded, in the right hands is going to put the odds heavily in your favor against 3 or less determined intruders who are unfamiliar with your house. The compromise is that a fully loaded KSG25 weighs a lot and is about 38” long. That’s why I’m currently doing a work up on the Tavor and looking at the possibility of it becoming a primary HD shotgun. 28” long, 16 rds. Semi auto, 8lbs empty. We’ll see.
My conclusion is that the author’s 7+1 Benelli is the better choice, regardless of the weight.
Ok, let's look at the “more than one determined intruder” aspect, assuming a double barrel shotgun. For this exercise we're also going to assume that the defender is “sheltering in place” in a bedroom, etc, and not actively going hunting (there's easier ways of committing suicide, you know?).
Now, unless you are facing a trained, tested, team of professional door-kickers...the first one comes through the door, and gets a heaping helping of buckshot.
This is not only going to wreck his day, but seriously screw up the plans of the rest of the team. If they’re stacking right behind hm...he's now a big lump of inert meat to trip over...and as #2 through the door does that, well...second verse, same as the first.
#3, at this point, is probably going to have a few reservations about going through that door, considering there’s a gory, leaking, knee-deep mound of dead/dying conspirators in front of him. Seriously...think they’re just gonna charge in right behind them? Remember, he has no idea that the defender is out of ammo...as far as he knows, there’s at least 3-4 more shots on tap...
At this point, of course, the defender has the option of reloading, or transitioning to a handgun, or other weapon.
And, really...if your lifestyle is one that trained teams of ex-SAS/SPETSNAZ/DEVGRU/ALLTHEACRONYMS are going to be kicking in your door...you may want to invest in professional security. Or seriously reconsider your lifestyle.
Now, all this being said, there’s nothing wrong with your KSG25 if that’s what makes you happy—absolutely, positively, more power to you.
But, realistically...events where it's going to give you a win over shotguns with less capacity...is pretty much a unicorn event.