Actually, that IS EXACTLY what I was wondering.....but I did my best to be the sweet, kind gentleman my benighted, sainted momma raised....or tried to...........

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Come and take it!!

Back in my younger days I cut the barrels and stock on a double barrel 12 ga. magnum. Barrels and overall was legal. I loaded both barrels with 3 in. shells and shot it one time with one hand. The breech lever cut the web of my hand and the back of the trigger guard took some meat off my middle finger and my fingers wouldn't move. I used my good hand to pull the gun from my shooting hand and remove the unfired shell. I learned in one lesson to not do that again. Larry

I know a Deputy who killed his partner with a 12 gauge miss. So at least two fatal cop shootings by their partners with 12 gauge shotguns.

Shotguns are not an answer for everyone JMHO

Same amount of ammo and same caliber, but a tad smaller.
P50 | 5.7mm Semi-Automatic Pistol | 50 Round Capacity | KelTec

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USMC 69-93 Combat Pistol Inst.

If you want to tote one, about as effective as anything without wheels within 10 yards or so. Wouldn’t want to use it at 40 yards across the mall food court.

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Alan
SWCA LM 2023, SWHF 220

Counter-point: Each 12 Gauge #4 Buckshot 3" Shell holds 41 .24cal pellets.

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Shooting Comfort is bilateral.

Don't want to tote one around. Was taught to take out the bad guy from behind the hostage at 10 yards with 00 Buck, without hitting the hostage. For longer ranges we used slug out to 100 yards.

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USMC 69-93 Combat Pistol Inst.

You seen the video of the San Diego PD officer taking out a murderer holding his ex-GF around her neck?

Shotguns are awesome especially for the few who really get it.

My issued .38 saved me more than once during my career & based on that it’s what I carry in retirement.

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Old Cop
LEO (Ret.)

Have not seen it, but have done it over 100 times using steel pepper poppers. Won some money on the shot, while teaching that it can be done.

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USMC 69-93 Combat Pistol Inst.

M110A2 Self Propelled Howitzer. You can take out the entire food court from 18 Mi away

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Retired Career Security Guard

I just watched the conclusion of the documentary film "Spectre" in which James Bond shot down a helicopter from a fast moving speedboat at a range of roughly 1/4 mile with a shot from his Walther PPK which is known to be chambered 7.65mm Browning (.32 ACP) "which hits like a brick through a plate glass window."

So for self defense, 7.65mm Browning (.32 ACP) for me, all day, every day.

One big issue with the OP's claims. Those ballistics were probably developed for a 28 inch barrel. So it's loaded with a slower burning powder such as Longshot and actually needs a longer barrel to get up to speed. Put that in a barrel that is roughly 14 inches shorter and you can say good by to that 1200 fps quoted velocity. My hunch is that you would end up in the 700-800 fps range. I will also note that a newbie to the Shockwave will probably drop the gun when they fire it. Recoil at this level in a hand held "pistol" is something you have to work up to slowly.

Not so, I'm afraid. 12 Gauge Shotshells are extremely low pressure, and due to how they function in the first place with shot, barrel length makes surprisingly little difference on velocity compared to other firearms.

Shotgun Barrel Length vs. Velocity - The Kommando Blog

This was the best article I could find on the subject, but I once read a better one with more 1:1 results because what they did was use the same shotgun but kept cutting the barrel shorter and shorter.
Unfortunately, I couldn't find that particular article, but I'm not surprised because it was over a decade old.

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Shooting Comfort is bilateral.

Whew! Glad thats settled......

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Even older, even crankier....

not sure of the caliber or if Smith makes a revolver for this, but it gets my vote.

Attached Images

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16” AP round from a battleship?

The M3 Grant in the background would work also.

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Alan
SWCA LM 2023, SWHF 220