What is the best way to improve your marksmanship when mere practice is no longer cutting it? I have reviewed a number of shooting workshops that focus on positions, learning how to shoot between heartbeats, etc but they are so damn expensive...especially the week long courses. Is this the only alternative? I know our Marines are taught to be proficient to 600 yards which right now I can only dream about. I can't do that with a Lead Sled at the range on a calm day much less in the field. But I want to improve my skill set considerably so what's the best route? Who and where would you go to for such an education?