Start shooting from prone and get your basic marksmanship skills down (postion straight behind the rifle, NPA, breathing, hold, finger position on trigger, consistent cheek weld, trigger pull, etc) and your groups will tighten up significantly. Hang out over at snipers hide and spend your time there reading, listening, and question asking and you'll be surprised how your skill level will come up.
I've shot almost every shooting discipline there is and nothing does it for me like long range rifles. For me, they're even more fun than machineguns.
+1
I just started shooting long range practical matches and I am hooked. This after 11 years of NRA KD shooting.
ETA: I'd have to say that sniper's hide has the best content on the web in this area.
Thanks guys. I will check out sniper's hide.