If you ever have the oppritunity to read, get the book Carlso Hathcock, Marine Sniper. The former post remined me of this. On you tube there is a 3 part video that details some of his exploits. The book will grip you and cause you to stay up late at night reading the next chapter then the next. It will also teach you to be a better shot, teaching you to "wait for the report", focus and put everything into the first shot. I encourage you to find this book and read it. You will not regret it and it will stick with you a long time.