Umarex Brimstone .30 caliber PCP slugs are designed for optimal hard hitting performance out of today's high performance Pre-Charged Pneumatic air rifles. The Umarex Brimstone .30 caliber slugs come in at 60.8 grains in weight and deliver maximum energy transfer with its hollow point design. These precision designed slugs are packed in a 100 count tin with a screw-type lid that prevents them from spilling.