I have an older Remington 700 7mag that I am going to rebarrel. I was considering having it rebarreled to .300 win mag. This may be a stupid question but anything else I need to consider when having this done? Or can I just have a barrel built and a smith install it? I have not spoken to my gunsmith yet about this. Just wanted to get some info from you guys. A friend of mine just told me about a local gunsmith that will blueprint and rebarrel a 700 action for $500. He uses Shilen barrels. Does this sound like a decent deal? The reason I am thinking about going from a 7mag to a .300mag is because I have two 7mags and want something with a little more punch. What do you think?