Loading and Unloading ISNT good for ammunition in PISTOLS.
This is typical police procedure now, NOT to keep loading and unloading pistols, because what happens is scratches keep forming on the brass cases of the Round and EVENTUALLY it weakens the cartridge and causes a KB(kaboom), which means say "bye-bye" to your pistol, and possibly your hand(s) or eyes and face or your life.
So I WOULDNT do it with shotgun shells either.
I hear what your saying though, i still find myself doing it with my Glock and AK sometimes.....even though i know the damage risks.
But its NOT good practice generally.
Police rule of thumb is if you've unloaded the round even once, you should properly dispose of the round.
I've PERSONALLY unloaded and reloaded a single pistol round 5 seperate times atleast, ended up accidentily taking it to the range and firing it, and it DIDNT have catastrophic faliure, but thats doesn't mean it wont happen.
Just load a few shells in the carrier tube or whatever, then just leave it alone, so if you need it, all you gotta do is Pump it.
And if you're worried about sleep walking or something, atleast it's not pumped and ready to shoot.
(hopefully your not smart enough to pump it in your sleep or something,lol)
I do the same thing with my Glock.
I keep the magazine in, and usually dont keep one in the chamber.
Because i just never know when im going to the pistol range, and im just tired of shooting Unloaded rounds or Disposing of them!