Preheat oven to 350°F. Generously butter 10-cup Bundt cake pan. Lightly flour cake pan. Tap out excess flour. Set aside.
In a large bowl, whisk together flour, baking powder, and salt. Set aside.
The bowl of a stand mixer fitted with a paddle attachment (or using a handheld mixer), cream together butter and sugar until smooth. Scrape down bowl as needed.
Add eggs one at a time, ensuring each egg is incorporated before adding the next. Add in vanilla and sour cream. Mix on medium speed until well blended.
Add dry flour mixture in three additions, alternating with the milk. Begin and end with the flour. Mix on low speed until thoroughly combined. Scrape down bowl as needed to ensure thorough mixing.
Use a spatula to fold chocolate chips into batter.
Pour batter into prepared bundt cake pan. Level batter. Bake for 60-70 minutes until cake springs back to touch and toothpick inserted in cake comes out clean.
Cool cake in pan for 10 minutes. Invert bundt cake onto a wire rack. Unmold and cool cake to room temperature. to unmold cake.