The Adventure module does not fully interact with Create's Potato Cannon. The cannon can be overridden to upgrade as a bow, but effects like arrow speed, arrow damage, and draw speed don't affect the cannon. I know it's a single-item mod interaction, so it probably won't be very high on your to-do list, but having these two mods working together would be pretty cool, especially if boss mobs could sling vegetables!

Edit: This is 1.18.2, sorry if you've already done this for a future version.