I still can't make up my mind for my custom 300 win mag. I am tossing around a #4 contour that weighs 3 lbs 14oz, #5 fluted that weighs the same as the #4, and a straight #5 that weighs 4 lbs 8oz. This is going to be a hunting rifle, but I want to be able to accurately shoot 800-1000 yards. Some guys say they like fluted and some don't. I am getting my barrel in 26", with a 1/10 twist. My gun builder is telling me to go with the #4. I measured my stock remington bdl and Tikka barrels that I have at home, and the barrel on the #4 is about the same as those. I thought it might be nicer to have a little bit bigger pipe. I am leaning towards the #5 barrel for heat and cooling. Any thoughts?