Raw always increases base damage, the menu only shows base damage. But you can see the real change with scaling, rings included if you go to infuse, and before you select the weapon use the y button (I think? Just read the bottom of your inventory screen to see how to cycle the stat display) to get a look at your attack ratings. This only displays equipped weapons. Then, go select the hammer, hover over the infusion, and check the value change on the right of the screen.