 
It doesn’t always have to take reinventing the wheel in order to produce a great bowling ball. The Resurgence core will go down in Columbia 300’s great history as one of the most successful cores we’ve produced. The low RG and Medium Differential makes this a great choice for all styles.
Core Type
              Symmetric
          16 pounds
RG
              2.470
          Diff
              0.040
          15 pounds
RG
              2.460
          Diff
              0.043
          14 pounds
RG
              2.500
          Diff
              0.038
          13 pounds
RG
              2.530
          Diff
              0.055
          12 pounds
RG
              2.600
          Diff
              0.039