There is something else worth discussing here. First of all, let us look at the rationale behind using the rifle to check shoulder bump. If the die is correct for the chamber than all is well and we are in relatively good shape, except for the inconvenience of stripping the bolt every time that we want to check the die setting.
For those who shoot a lot with smaller sets of brass, work hardening will require a slight adjustment of die setting, more often than if larger sets of brass are used.
I have known many shooters that seem to view setting a die as a necessarily time consuming task, and that once a die has been set, that it can be left at that setting forever for that barrel or rifle. I disagree with both ideas.
Some years ago, setting up to load for my 6PPC at the range, forgetting that the last set of brass that I had set my die for was old and work hardened, I started sizing a fresh set. Luckily I thought to check shoulder bump after sizing just a couple of cases. The setting that had produced just .001 bump on the old cases, produced .0035 on the new, softer cases. From that point forward I began unsetting my die at the end of each range setting and resetting it the next time that I used it...by measurement. Which has worked very well since, and takes very little time once you get the hang of it.
On the other hand if the stars are not in proper alignment the die may be a bit too large for the chamber (so called match chamber) in which case, by the time that you get the stripped bolt feel that you are looking for, the shoulder will have been pushed back too far. I have seen this. (Shooters do not typically carefully measure case body diameters just above he head and at the shoulder, before and after sizing.)
If we use a gauge to set our dies and after doing so, the assembled bolt feel is not as we would like it to be, then we can be pretty sure that we need a different die, one that is smaller inside. I say this with all due respect to the fine shooters who strip bolts.
Years ago, after buying and using my first bump gauge, a Stoney Point, identical to what Hornady now sells as their headspace gauge, and being given one of those brass gauges that with a Harrell die, I told a friend that he might want to make himself one of the latter (given that he has a lathe) and he asked me why, after all of his years of experience reloading he would want to do that. He said that he was perfectly capable of doing the same thing by bolt feel. Anyway, I challenged him to set his die multiple times by feel (unsetting it between each time) and bring me the resultant cases to be measured with my gauge. He did, and the results were all over the place, varying considerably from case to case. At that point he went home and made gauges similar to the Harrell that I had for my 6PPC.
Finally, when we give advice on a popular forum we may be pretty sure that our audience is larger than just those that post on that thread, and that some of those readers may not have a full grasp of the subject being discussed. (None of us were born knowing this stuff.) For that reason alone, I am always going to advise to set dies by measurement rather than feel, since I seen no possible disadvantage to measuring, and there is a remote possibility that someone will set a die incorrectly (because of the unsuitability of the die for the chamber) and then proceed to size a large number of cases so that they have been bumped excessively.