No. .22 WMR (22 magnum) has a larger diameter than 22 LR, and will split the cartridge casing. Accuracy will not be good- bullet sort of rattles down the barrel.
It will need to be examined by a competent gunsmith
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.
22 Magnum Rim Fire
The Ithaca rifles are rimfire. Most are .22LR, but there is at least one .22 magnum.
Only if it's a .22 Long Rifle revolver. It's not compatible with the .22 Winchester Magnum Rimfire.
Inexpensive Italian copy of a Colt revolver. Value $75-$100 in excellent condition. Some also had a second cylinder in .22 Magnum- add $15 for second cylinder.
.223 inches for the .22LR, .224 inches for the .22 WMR.
No. The 649 was a 6 shot, and had two interchangable cylinders to permit the use of .22LR or .22 Magnum cartridges.
Small game can be hunted with the 22LR and 22 Magnum.
IF the revolver is marked ".22 LR" yes. If it is marked ".22 WMR" or .22 Mag" or " .22 WRF", then NO.
just the cylinder change
No. The .22 Magnum is not only longer than the .22 LR, but it is larger in diameter. The 22 WRM (its proper name) also has much more energy- and would not be safe to fire in a rifle built for .22LR.