can a NES rom be loaded into a real CART?

hello, I know for the best foreign games on the NES/Famicom is by a ROM and emulator. The thing is that I hate sitting at a computer playing games. If I could, I play all my games on my big screen TV, but the thing is that one day on ebay, I bought a bootleg Earthbound Zero that ran perfectly on the NES in english. It even had battery setup!

Anyways, I am wondering how one would go across doing this action? Can you load a game into another cart? If so, how? Thanks
 
Also you have to make sure that the cart you are loading the ROM into has the correct mappers.

This happened a while back with the "prototype" of Earthbound (Mother 1) for the NES. It turned out to be a fake.. someone just loaded the ROM onto the cart.
 
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