Did you not catch onto the hypotheticalness of it, or the fact I did state such a gun is "too powerful too excessive and too dangerous for defense?"
And, for your information, yes, they do make a 10 inch version, with an optional shoulder harness, and you don't have to be point blank with it because it is made for hunting.
And they don't even make it with an 8.3 inch barrel.
Combined your post.
Obviously you do.
The revolver that you referenced is not a S&W, it is manufactured by Magnum-Research and uses .500 S&W ammunition. I don't want to belittle you, but I think you had better understand firearm nomenclature a little better before you start making statements that are false. Doing so puts you in the same category that I place many of the anti-gun crowd. I know you really don't care but just a short lecture on firearms.
A 9mm Glock is chambered for 9mm Luger ammunition. Using your criteria you would say that the Glock is a Luger.
Now using the same criteria, would you say that a 1911 45ACP S&W is a Colt since ACP means Automatic Colt Pistol.
There are many different types of ammunition. All .38 caliber ammunition is not 38 S&W and not all .45 caliber ammunition is not .45ACP
Now to your point that S&W makes a revolver that is chambered for .500 S&W makes a 10 inch barrel is false. Obviously you thought you didn't need my help when you said the S&W company makes a 10 inch barrel. They don't. The Model S&W500 manufactured by Smith&Wesson comes only with a 8.3 inch barrel. Here is the specs from S&W
Specifications
SKU: 163501
Model: Model S&W500™
Caliber: .500 S&W Magnum
Capacity: 5
Barrel Length: 8.38" / 21.3 cm
Overall Length: 15.0"
Front Sight: Interchangeable
Rear Sight: Adjustable
Action: Single/Double Action
Grip: Synthetic
Weight: 69.1 oz / 1,959.0g
Barrel Material: Stainless Steel
Frame Material: Stainless Steel
Frame Finish: Satin Stainless
Purpose: Hunting, State Compliance