They are made by cutting edge bullets. Each one is milled on a cmc machine. Supposed to be the most devastating bullet money can buy. Unfortunately there is only one distributer in Canada. I am interested and may try and convince my LGS to bring in a box or two of them. Even at $75 for a box of 50 its not that bad considering you would fire one a year... I sight in with similarly weighted bullets and use my good ones for meat.