Most guys don't take proper care of their hunting rifles, They hunt with them and stick them back in the closet until next year.
How often you clean them is open to 100 different opinions but I think that with modern ammunition today, the cleaning isn't as neccessary as it was in years past.
I use nothing but Lubalox coated bullets through my rifles so the copper build up is not as bad as it is if you use copper or lead bullets.
I worked to hard to earn the money to buy my rifles to let them get to dirty, so I clean my rifles about every 50 rounds after they are broke in good, and after EVERY hunting season.
I Clean and oil every part of them and wipe them down before storage.
I have had some of my rifles for over 50 years, and outside the occasional ding they get, they look and fire as good now as they ever did.
How much you shoot and how often you go hunting in the weather has more to do with how good of shape your guns stay in, so clean them after every hunting trip even if you don't clean the inside of the barrel.
My first shot over a clean barrel is subject to shoot off a little in some of my rifles so I won't clean the inside of the barrel if I Know I will be going hunting again in a day or two, but when I am through with the season, I will clean them completely before I store them. You wouldn't buy a new car and never take it to the car wash, so don't treat you rifles any different.
Hope this helps.