Most hunter's I know only shoot at the animals they hunt, so in 40 years couple hundred rounds at most because of game limits.Why would you imagine that, dannyd? Dad used his Model 100, .308 (1961 vintage) for mule deer and elk hunting for 40 years as best as I can remember. And I used my own Model 100 .308 for mule deer and elk hunting from 1964 until the early '80s when I decided I just "had to have" a 30-06 for doing the same things I'd been using my .308 for since I was about 15 years old. So, I got myself a Ruger 77, 30-06.
Dad did have a Model 100, .243 for only a few years. I think he bought it thinking Mom would use it, but she never did take to it. So, I guess that Model 100 was in the "lightly used" category when Dad sold it.
I am a target shooter, so my revolvers have anywhere from 5,000 to 35,000 rounds on them.