P dog huunting
If you are going to limit your shots to 100 yds you must just be going to dabble at it. Not every hole has a couple of P dogs in it. You will find out that it doesn't take long for you to either kill the 100 yard ones, or the ones you missed will not come out. Stick gwith 40 brain bullets if you can, they shoot flatter and will net you a few extra yards.............if the wind is not whipping. As for scopes I proved to myself that a Leupold 6X25X40 is the best and can be moved around to better Pdog rifles if need be. More magnification and mirage gets to be a big problem. Less magnification just does not give you enough detail to properly dope the wind. Side focus is a great help. Last shoot I went on my buddy and I + guide carried 18 rifles that ranged from 22 LR to 22.250, to 6BR, to 243 improved, to 25.06 and a total of 5000 rounds. My longest confirmed kill was 786 yards, with the 25.06. If you are serious about Pdog shooting and the 223 is all ya got. Use 40 grain bullets in as hot a load as your gun will take,[flattened primers}. You will be seriously underguned if you really want to get after them. Would recommend that you get interested in predator hunting, which the 223 / 5.56 can excel at.