I am a Colonel grade 3. I always get a + KD what I did was. Make a custom game. set up shooting ranges for sniping. have special games with special weapons. Practice Hiding, jumping, flanking. learn levels. spawn points. pro jumps. Practice with every weapon. Ull get good enough to kill a shotty up close with a sniper one shot. AND ABOVE ALL BR IS UR BEST FRIEND!!! LEARN ITLIVE ITLOVE IT! and PRACTICE PRACTICE PRACTICE!!!!!!! oh AND SET UR CROUCH TO hold to crouch. and when sniping look sensitivity 4 is better fir beginners. im on 10