My father's buddy has a very old Model 60 that he has never cleaned and it shoots like a champ. I cleaned it for him the last time he let me shoot it and it was extremely dirty inside IMO. But it still shot perfectly.

My Model 60 is very easy to take apart and clean. I wouldn't even consider removing the barrel from the receiver. Just use some q-tips and clean around the breech as best you can. The rest of it is very easy to clean. You can just use some action cleaner or even brake parts cleaner for the trigger group and inside the receiver. Q-tips will help you get to those hard to reach places.