My Seikos have handled .45ACP and stouter .45 Colt handloads, I THINK I had some timekeeping anomalies with the .45 Colt loads, no telling what that poor balance wheel was doing with those, and generally leave them off for such loads now, my bench and staking tools went away a very very long time ago, not to mention eyesight and hand steadiness...I remember when I bought that stuff from a retiring very old watchmaker who was giving it up for the same reasons.I've shot with plenty of mechanical watches on. I'm not shooting full load 10mm or 357's while wearing my vintage Wakmann chronograph, although 9mm or small caliber rifle never hurt any watch I was wearing while shooting. That being said, you're still correct. If I remember, I'll put on a quartz watch if I know I'm going to the range that day.
Besides, if I wear a mechanical watch and end up breaking a balance pivot due to the recoil, at least I'll have an enjoyable repair project to do later.