Hey, I have a bunch of questions on rifles and scope...... I've been shooting for a while, but have never got serious (only been shooting at 100 yards). So far I’ve been shooting with a .243, but i have just got a 7mm mag and a new Burris XTR scope 6-24X, and I'm aiming on getting more serious........now for the questions: What is the effective range of the 7mm mag? I've been doing a lot of googling, but haven't come up with the answer. How big of a difference am i going to see between the 7mm mag, and the .243? Should i look into loading my own loads(?)....or should i wait till i have had more experience? Is it worth the money to buy a bipod? I mean the type you would see being used in the military......... Lastly, do you guys have any helpful hints on sighting in my scope, and shooting in general? Hope you guys can help... Thanks.