This answer is crazy simple. It's completely perfectly clear. Take a look at a chair of your arm bones . You will find a number of joints all throughout you forearms and hands that are going to be hammered very, very hard every time you pull that trigger, and every shred of that energy is going to hammer directly onto a few pieces of cartilage about the size of a quarter. Then, it's going to twist. It's going to reach the elbow, and even touch the shoulder.
If a person can be crippled for life by carpentry work, pitching, tennis, or any number of other things, you can bet your retirement savings that a handgun that heavy can cause damage to any of the structures in your hand, and almost certainly worsen existing problems.
As was said, I believe that the rec o I'll impulse of a .308 is so close to that of a casul that it's irrelevant. The biggest difference is that you if you put a pad on it, hold it properly, and allow that impulse to spread out, it's hard to imagine causing injury. The shoulder is a robust joint,padded, and there isn't an actual bone on bone compression or twist.
In the sort of shape my joints are in, I'd probably not fire heavy pistols routinely. I only fire my .357 occasionally. After two operations on my shoulder, I don't mind too much recoil, even so, I am certain that even a heavier rifle than a .308 couldn't physically harm me, at least that's what I've been told.