Best Gun Cleaning Kits Boy, Was I Disappointed! If I Use A Gun Cleaning Kit On My Winchester, Can You Tell If The Rifle Has Been Used Recently?

If I use a gun cleaning kit on my Winchester, can you tell if the rifle has been used recently? - best gun cleaning kits boy, was i disappointed!

A character in a story I'm writing claims that he used his Winchester hunting (trying to his wife) the debt, but says another character, they could tell the gun fire was never shot, and in fact, is new. Is it possible, or I think of another scenario?