Nooo.
No. They are totally different size and shape cartridges. 22LR si rimfire, 22 Hornet is a centerfire.
Probabably 22LR. Have it checked by a gunsmith.
No. The .22 LR is a straight sided RIMFIRE cartridge. The Hornet is a bottlenecked CENTERFIRE cartridge. The chamber of a Hornet is MUCH bigger- you could not get a Hornet into a .22 LR chamber- and the firing pin would hit in the wrong place.
Yes
IF the revolver is marked ".22 LR" yes. If it is marked ".22 WMR" or .22 Mag" or " .22 WRF", then NO.
Yes, you can shoot .22LR through a .22 Magnum cylinder, provided the firearm is specifically designed for it, such as a convertible revolver that accommodates both cartridges. The .22LR cartridge is shorter than the .22 Magnum, allowing it to fit in the .22 Magnum cylinder. However, using .22LR in a dedicated .22 Magnum firearm that is not designed for it can pose safety risks. Always consult the manufacturer’s guidelines before attempting to use different ammunition types.
No. It is a 22LR semiauto, and needs 22 LR ammo to cycle the action.
The rifle will shoot .22lr .22 short, and .22 long. Only .22lr will cycle the action and load the next round. .22 Short and long will function as bolt action only.
A qualified gunsmith will ream (machine ) your chamber to the K dimensions, and then you simply shoot your regular hornet ammo in the gun. The pressure from firing will expand the brass of your cartridge to the exact dimensions of your new chamber. When you extract the case, it is a k-hornet case. Simply reload accordingly. This is known as fire forming.
four
22LR
Not safely. The 22 lr is a slightly smaller case dimension, so it'll split in the cambe of a 22 mag gun, and vent gas out the back.