I am building a custom 300 win mag. and am trying to decide between a number 4 and 5 contour. I like the weight savings of a 4, but am I sacrifing too much weight? I am a little concerned about muzzle jump with a lighter 4 contour barrel. For a good all around hunting/long range gun, what is everyone's take on this. I am afraid of getting too light of a contour, but also don't want to have to carry a pipe around in the woods.