Lloyd, great thread you started, and no I do not think you are loosing your mind. I'm wondering what your grandfather learned from his father and grandfather.
It is nice to have memories passed down to you and when you were younger they might not have meant much as they do now.
The only relative I had that hunted was my mother's brother. Let me shoot his .410 Stevens 311 and I kept it for awhile and hunted with it. He was a good carver and carved many miniature birds and animals. His favorite was carving a mule with a full pack of tools and bags.
My father never hunted but drove me and friends hunting and would come back and pick us up, never thinking that he was doing something important for himself. During the summer when school let out my mother would drive a few of us fishing until her arthritis became to severe and she became bed ridden.