Detecting full wind

[HiBoost]

I have a couple of 32xx watches that I'm wanting to fully wind. When I first start winding (with the case pressed against my ear) I hear a series of precise clicks, almost like rotating a diver bezel. After a while (around 30 twists with my thumb, not sure exactly how many crown rotations this corresponds to) I start hearing some extra "pops" in addition to the original clicks. Is this the spring's end snapping in/out of the vertical barrel grooves? I.e. does this indicate full winding?

This would seem to make sense, but the reason I ask is because I often seem to be able to get higher amplitude readings by winding a few times more after this point, which would indicate it could be further wound still. But perhaps once you get into this part of the wind where the spring starts slipping in the barrel I'm just experiencing the difference in tension between "almost popping out" and "having just popped out"?