I've owned two BSS with pistol grip stocks and beavertail forends. One 26" which I still use for ducks and geese and a 28' which I recently sold. They are beefy/blocky guns with poor balance and styling. In many ways they remind me of my Savage 311 I grew up with. My only reason to keep one is so I can pour any combination of steel shot out of it without worry.

I have not owned or shot a M23 but have handled one and conclude they come a close 2nd to the BSS.

Nothing is foolproof to a sufficiently talented fool.