The answer is maybe. Certain revolvers are "convertibles"- they have two different cylinders. However, for most firearms, 22 LR should NOT be shot in .22 Magnum guns (cartridge case will split) 22 Magnum ammo will not fit in a 22 LR chamber- too fat to fit.
No. Not only more powerful and longer, they are larger in diameter, and will not fit.
I would avoid it if the shotgun barrel has a full choke. sales@countrygunsmith.net
A Colt peacemaker with that serial number was made in 1974.
Nooo.
22LR
22 magnums actual caliber is .220. If you look at the tip of the bullet 22 mag has a sharp point. On a 22lr it is rounded and 22 mag is bigger around. Look around the rim and it will say 22 magnum or 22 lr.
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 Marlin model 60 should only be shot with 22 long rifle ammunition. It should be marked on the barrel or receiver and may say 22LR.
22LR
Aluminum receivers, steel barrel
Probabably 22LR. Have it checked by a gunsmith.
you will have to have a gunsmith check it to be sure.