Very generally speaking, a .22LR can travel more than a mile, but with accuracy, most people can shoot out to 300 or 400 yards with one when using a rifle, however some people are accurate further than that.
Nooo.
22LR
Probabably 22LR. Have it checked by a gunsmith.
Mosin nagant
Yes
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.
some shoot far and some dont so they all dont shoot the same length
No. It is a 22LR semiauto, and needs 22 LR ammo to cycle the action.
IF the revolver is marked ".22 LR" yes. If it is marked ".22 WMR" or .22 Mag" or " .22 WRF", then NO.
No. They are totally different size and shape cartridges. 22LR si rimfire, 22 Hornet is a centerfire.
Very far
I would avoid it if the shotgun barrel has a full choke. sales@countrygunsmith.net