Well I've been busy and have not been back on here until just recently, glad to see you went with the 243! it's a great round and can be accurate as all get-out. Your group is not bad could be better but it will come with practice and lots of trigger time but you'll get there! we all started at one time and most of us didn't one hole everytime
After some time you'll find that you will probably want to do some things to your rifle that will help with your long range shooting and for some cheap fix have someone work your trigger, one of the best things you can do to a rifle is a good trigger, bedding helps and is another cheap thing you can do that helps, floating the barrel is another easy thing that can be done.
There are lots of things that can help you out but trigger time is the most important! get to where you are not thinging about the shot and things will start getting easier, I mean after you figure out your range and other good things and you know your right put the crosshairs on your target and things just happen you'll be getting close. Trigger time dude! you'll get there. Later,