I would say that the .308 is a good caliber to start with especially if your not reloading yet. Plenty of factory match ammo available at a some what decent price. The win mag is a good round out to and beyond 1000 meters but with added recoil and added expense in ammo. I have had rifles that are stock 700's and my most recent is a 700 that is trued and has a new bartlein barrel. There are many factors in accuracy then just truing an action. Barrel, Stock, trigger, ammo, optics and shooter are the main contributors to either having an accurate rifle or not. You can give someone a million dollar rifle and it will shoot like shit because the person behind the wheel lacks the basic fundamentals. If your planning on getting a new barrel and having other work done then skip getting the 700 police. Your paying for parts your going to just remove. You would be better off getting a 700 5R and then just go shoot it. Spend the money on a quality optic and good ammo. Take it for a few test runs and see if this is the sport you want to not only invest your money in but also your life. Being able to hit your target is allot "cooler" then having a rifle with all the best parts and not being able to shoot the side of a barn.