Where do single-action revolvers load?

Single-action revolvers typically load through a gate on the side of the frame, which allows access to the cylinder for loading and unloading cartridges. This particular design involves swinging open a loading gate that is located on the left side of the frame, providing a convenient entry point for inserting rounds directly into the chambers of the cylinder.

Using this method, the user can manually load each cartridge one at a time, making it essential for single-action revolvers as it ensures the proper functioning of the firearm when fired. Additionally, revolvers are designed so that the cylinder rotates into place as the hammer is cocked, which is characteristic of the single-action mechanism.

The mention of loading through other parts such as the barrel or the cylinder directly overlooks the specific design of a single-action revolver, as they rely on this side-loading feature.