Your gonna want to full length size your new brass. Thats about all the "prep" you will need to do. You picked a good rifle round to start with. The .223 offers good flexability all around when it comes to components, data, and overall loading. A good powder to start with is Varget from Hogdon. Its a very forgiving powder, gives reasonably low pressures for same velocities, and is pretty accurate. The plus side of it giving lower than normal pressures means you get a little more life from your brass. Depending on how much you shoot, 1000 rounds should last quite a while. You can extend your case life a little more by neck sizing instead of full length, but it may or may not help increase accuracy.....its one of those wierd things in reloading. Annealing will also help too, but most people dont bother with the effort. If your looking for ultra mega accuracy then its worth trying. Dont know what exactly you want the gun to do, so I cant quite yet reccomend a bullet. But a good place to start, wether punching paper or killing g-hogs any of the polymer tipped spire points are great.
Im sure youll have more Q's, so fire away :wink: .
Brian M.