The Berry's Manufacturing 9mm/380 100 grain Hollow Base Round Nose bullets feature an innovative hollow base design that provides superior accuracy and stability with 0.356" diameter for precise fit.Berry's Manufacturing 9mm/380 (0.356") 100gr Hollow Base Round Nose bulletsHollow base design increases barrel contact area for improved accuracyEnhanced rifling engagement for better bullet stabilizationCompatible with standard jacketed bullet load data (same weight)Guaranteed performance up to 1250 feet per secondRecommended COL (Cartridge Overall Length): 0.970"Ideal for precision reloading applications where accuracy and consistency matter most. The longer bullet profile maintains standard weight while delivering improved ballistic performance for target shooting and competition use.