The 308 137 gr Terminal Shock ammo utilizes the same powder core technology as in all other Terminal Shock rounds, with less cost to the consumer. The core is made up of less expensive material, copper, but sacrifices very little when it comes to performance. The 137 gr bullet is very accurate, but has a lower BC due to it’s length and lower SD (Sectional Density). Our 30 caliber bullets work great on Moose, Bear, Elk, Deer, and Hog sized game animals. These are high performance rounds that work best in the 0-500 yard range.