Some are keepers...others, until I get tired of them
I hae my Grandfather's Ithaca shotgun, its 102 years old, currently. I have one of my Dad's rifles, and 3 of his pistols. They are gone from the family, but their guns are still with us, and provide memories everytime I see them.
I still have my first deer rifle, that my Dad gave me. These guns aren't going anywhere until after I do. Then they will go to my children. Along with whatever else is in my collection at the time.
Others, I have bought, and some kept for decades. When I decide I want to sell or trade them, I will.
All else being equal (and it almost never is) bigger bullets tend to work better.