ignoring the damage that all guns seem to be lacking in the beta
the reload is slow as hell but you can get a magazine attachment, oops you now have 30 bullets total for a gun that can only kill 1/2 zombie per shot teehee

the pack a punch is actually a war crime it has to be bugged:
-no mag size increase
-reserve size actually decreases
-no increase is shells put in like every other shotgun since WaW
-doesn't seem to even increase fire rate

SURELY THERE ARE BETTER WAYS TO MAKE SHOTGUNS LESS META THAN THIS