Yet POI changes on all of those, consistently. Thus the need to check zero after traveling. Now many may be happy with such risks. But for me, I spend way to much time and money on hunting trips, to miss animals because of an unreliable scope, to return home with tag soup and return the scope f ok r warranty repair and or replacement.
But of course, we all have different acceptable risks.
Before I knew about drop tests and how sensitive scopes were to vibration, I was a fairly successful elk and deer hunter with an old savage 111 and a Tasco 3-9. Every animal I shot at died. The rifle was dropped many times and I almost always continued my hunt without re checking zero. So why was I able to kill so reliably with such an abysmal weapon system?
The answer: Because all my shots were well under 300 yds. Most animals were shot within 150 yds or less.
What's a 2 moa shift from zero at 100 yds? Hell, my first elk was smoked at 60 yds. What's a hard fall and 3 moa shift at 60 yds?
Like I said before and statistics prove, the average hunter isn't shooting very far, will not be dialing, and isn't traversing treacherous country.
You've mentioned that Vortex scopes shift POI just from riding in a vehicle. I can't and won't try to dispute that. All I know is that 2 years ago, I drove from IL to WA and 25 miles up shitty logging roads, to do a bear hunt. Once I got to where I was going to hunt, the zeros on my 7mm with Viper and 30-06 with Nikon Monarch were checked. Outside of a small, predicted adjustment for elevation change (from 500 ft to 5800 ft) both rifles were right on.
All I'm saying is, I didn't see any crazy POI change. I'm a 0.9 - 1.2 moa average with both rifles. Maybe that's not precise enough to detect a change? I don't know.
Regardless, I appreciate the discussion. I don't want you to think that I'm against the advice you're giving. I'm just presenting an opposite view.