Hi im new to the sport of competitive rifle shooting. I'm really big into Archery, but I want to get involved in some of the long range competitions, 600-1000 yard. I love shooting and competition so I'm sure it's going to be something I'll enjoy, where should i start out and what kind of gun set up should I be looking at? The rifle I'm shooting right now is a old Lee Enfield No1 Mk4.