I shoot a lot of 3 gun competition and have used the AR15 and AR10 type rifles I shoot for hunting as well. In 3 gun, rifles get banged around a lot and tossed in dump barrels or onto wooden tables during transitions to other firearms. My mounts are LaRue, Warne, and Vortex. The scopes are Vortex PST, Bushnell Elite, and Leupold. I have yet to have a scope knocked off enough to make a difference and we often have targets at 400-600 yards.
That said, two years ago on a CO elk hunt, the steep mountainside I was traversing gave way. I had my day pack on and my 300 WM M700 slung over my shoulder. I fell backwards down the slope, landing on my rifle first (of course) and sliding down some rocks. That was about 240 lbs of me and gear that landed on the rifle.
I took it to an area by camp where I could check zero. It was off enough at 100 that any longer shots past 200 would probably be misses or worse yet, bad hits. The base and rings were Leupold and the scope was a Swaro Z5 3.5-18 with a BT. Neither appeared banged up but I did need to make adjustments to get back on my zero.
Sadly I didn't get a shot on that trip. But last year during deer season, I decided to hunt a hayfield at my in-law's farm where shots can be up to 600 yds. I hadn't shot the 300 WM since the sight-in after the fall in CO. I fired a couple of shots at home where I can shoot out to 250 and it was still on. So I decided to use it instead of my AR10 I had been hunting with. It didn't let me down and I got a nice buck at 444 yards with the shot right where I dialed.
Confidence is a lot when shooting and hunting. Guns can get banged around and never move off zero. And yet even a quality set up can get jarred off zero. Don't be afraid to reconfirm your zero if you feel your rifle or optic took some hits.