Good afternoon gentlemen. I have a question and need some help finding the best answers. I have a Remington 700 SPS 223. I have decided to begin customizing this rifle to the max in the hopes of one day handing a true nail driver down to my son. I've been looking at custom barrels, but I have no real knowledge of what all I would need to do. Money, really isn't an issue since I have several years before he will be ready to even handle a gun. I guess my question is, where should I begin if I want a true, long range custom 223? Any info would be helpful.