No real way to answer this- revolvers that can hold 4,5,6,7, or 9 or more rounds have been made for years. Some, in the form of "pepperbox" pistols, are older than Col. Colt's invention. Many were made in smaller calibers, such as .22 rimfire. Smith & Wesson's first metallic cartridge revolver, the 1st Model, was a 7 shot .22 first made in 1857.
Yes
A .38 Special round is compatible with a .357 revolver because the .357 revolver is designed to shoot both .357 Magnum and .38 Special ammunition. The .38 Special round is slightly shorter than the .357 Magnum round, but it can be safely fired in a .357 revolver without any issues.
It is the round with which the revolver was "proof fired" at the factory to test its functionality.
A revolver with a 6 round capacity.
NO
To distinguish a square butt revolver from a round butt revolver, examine the grip frame's shape. A square butt revolver features a more angular, flat grip that allows for a larger grip area, while a round butt revolver has a smoother, rounded grip that tapers towards the bottom. This difference can affect handling and comfort, particularly when using different types of grips or holsters. Additionally, the model designation often indicates the grip style, providing another clue.
If it is the correct one, yes.
The portion of a revolver that holds cartridges as they are fired is the cylinder.
No one
I can load my charter arms bulldog pug 5 round .44 special revolver in 6 seconds without a speed loader.
It depends on what you mean. A .38 revolver may be a .38 special, but there are other types of .38 besides just the special round.
Only if it's a .22 Long Rifle revolver. It's not compatible with the .22 Winchester Magnum Rimfire.