Most of the “evidence” is anecdotal. Personally I would not want to give my position away by unnecessarily “racking” the pump, or lose tactical advantage by not having a round chambered and ready to go. That said I keep a Mossberg 590A1 in my truck, but for home defense I have two strategically located H&K Benelli M1 Super 90’s. All are loaded with #1 Buck, which I find works better than 00 in defensive situations, and all have rounds chambered and ready to go.
two things Sir...
I keep #4 in the defender, opinions on shotsize???
I used to keep it loaded and locked, but figured the spring would ultimately get fatigued...or do you alternate the twins and give em 'off' days ???
My favorite flavor and first to grab at home as well...
I keep a sliding scale of rounds loaded: 4buck > 00buck > 000buck > BRI sabot...