Hmm interesting. I may need to test this
You don't need to test at 1000. You can test at 100 to see the effect of unpredictable recoil resistance. You must however be able to recognize when you have a consistent position to understand the effect of a less than consistent position.
But, let's say you can build a consistent position, as appraised by your ability to shoot very small groups, then, the only thing you need to do to see effect of unpredictable recoil resistance is get out of position and move to another firing point with some divergence from the ground previously shot from. You can also change your clothing or virtually any other aspect of your position to see shot misplacement from unpredictable recoil resistance.
The bottom line is that any change in your relationship between gun and ground will cause a misplaced shot due to recoil resistance becoming unpredictable; and, if the change itself becomes consistent, then misplacement will form a group, indicating the need to re-zero.
Thing is, most of us cannot get exacting consistency between shots much less relays so we are not able to realize the literal definition of a zero: where the bullet path and line of sight intersect and their resulting value in any form of measurement is zero. Instead we triangulate a zero from the groups we shoot, essentially a bunch of misplaced shots caused by a multitude of errors. This may make isolation of error due to changing recoil resistance hard to discern for the average shooter. In fact, since a zero created from any grouping is one which has accounted for a multitude of errors any specific source of error may not be discernable. This is why instead of focusing on the error as seen on the target we should focus attention on what needs to be properly accomplished at the gun, i.e. properly pointing the rifle with consistent sight alignment and pulling the trigger without moving the rifle utilizing smooth trigger control.
In addition to shooter inconsistency, changing wind and weather, and less than perfect ammunition will also preclude the maintenance of a zero. All of these things being likely, making zero corrections will be a reality for the best results.
Think of it this way, anything that is different will produce a different result. When something different becomes consistent it will produce a consistent different result. Since this is expected, instead of being stuck on a zero, just concentrate on the fundementals and if shots are off call adjust your sight and move on.