Spindle has 23 shots... And I can fire my 23 shots at him and empty my heavy on him before you can get out 23 shots let alone 35... That's why... And you won't be able to fire 35 shots in one dps phase anyway so it's all about getting out as much damage as possible in a limited time period.... And the spindle has much higher impact so it does more damage per bullet and fires a lot faster because you don't have to reload once. That's why the spindle is king for warpriest and golgoroth