43 Spansih
Depedns on what the barrel is marked as to caliber. Could be rim or centerfire.
It is marked on the barrel.
It should be marked on the barrel or reciever. If not, you must take it to a gunsmith for examination and possible chamber casting.
You have to tell us what caliber it is. It should be marked on the left side of the barrel. The Model 1894 was chambered for almost every cartridge available, so depending on which one it is you may be able to find ammunition at WalMart and you may have to pay big dollars to get some from a specialty manufacturer like the Old West Scrounger.
Question is too broad to answer. In general, use ammunition that is the same as the caliber or gauge marked on the firearm. If it is marked .38 Special, use only .38 Special- NOT .38 S&W, NOT .380. NOT .38 Super.
Look on the barrel, it will be marked with the correct ammunition.
It should be marked as to caliber on the barrel.
.32 caliber is not enough infromation. Ammunition marked "7.65 Browning", ".32 auto" and ".32 ACP" for practical purposes, are all the same. Do NOT try to use ammo such as ".32 magnum" or ".32 long" as it would be a different round.
Look on the barrel, it will be marked as to the proper ammunition.
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.
Should be marked on the barrel. It is impossible to tell caliber from the information you provided.
It is marked on the slide.