what is 8150? do you mean 8125? 12 strands? are you sure. reccomended strand count for 8125 is 18 +/- 2 stands. do you mean 12 stands of each color? i'd like to know. the string and cable need to be about 5 times stronger than the force your bow will put on it, and 12 strands total would not do it. most people who are going to mix would use 8125 for the string for the supposed added speed and 452x for the cable for the extra stability.