My advice is to purchase a factory, or a limited production, semi-custom rifle, that comes as close to your ideals as possible, so you can have the rifle before you forget why you ordered it in the first place. Yes its nice to have a fine custom rifle, that is built without any consideration for price, but it can be a long road from concept to realization. Worse, once in your hands, it might prove disappointing, since the rifle strains the limits of the material and dimensional realities, typically needed to produce a viable rifle. Your expectation of a 6 pound rifle, scoped, with a sling, and rounds in the magazine, pushes those limits, and probably means your rifle has to be in at around 4 pounds. Considering a Kimber Mountain Accent comes in a 5.5 lbs, a Weatherby Ultralight comes in a 5.75 lbs, Howa's Alpine Mountain comes in at 5.7, and NULA's M-20 Short is 5 pounds even, one is forced to question if a 4 pound rifle is a realistic expectation, and if it were, its unlikely the rifle that could be shot intuitively. One recurring theme of the custom rifle, is that it is only ideal for the fellow who ordered it, and is therefore less valuable to any potential buyers down the road.