I have kept records of my handloading and big game animals since around 20, but couldn't call them journals. Instead they record the technical particulars, such as the animal, range, what it was taken with--whether rifle, shotgun, handgun or bow--and either estimated or actual weight. Eileen bought an 800-pound freight scale at a garage sale maybe 15-20 years ago, and we've been weighing most animals since--which has resulted in some interesting information for her game cookbooks.
I started keeping journals of major hunts around 20 years ago, making notes each day. They've also helped considerably when working on stories, because like many "mature" hunters I don't remember details quite as well as I used to! Or perhaps as well as I thought!
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.” John Steinbeck
