you don't need it. get close to oryx and spam doctrine of passing or hand cannon. their dps is higher than a base scout rifle, and getting close eliminates the range damage fall-off. do this after dumping the sniper rifle mag into oryx's chest. "oh you're 320 you have the damage advantage" been doing this since I was 308 on hard raid release date, first attempt we killed oryx no practice run or anything, he got staggered almost immediately. gitgud lfg elitists.