Cream the butter and sugar for 5 minutes. Add eggs, one at a time. Mix dry ingredients. Mix the lemon zest and juice with the sour cream. Add the dry ingredients alternating with sour cream mixture. Beat well. Gently fold in the raspberries. Pour into greased and floured bundt pan. Bake at 325 for 1 hour 15 minutes. (Mine took more like 1 hr. 20-25 minutes to get done.)