So since I finally finished my 7/300WSM build I have been kicking around the next project. I want to put together a fairly lightweight (8lbs +/- with scope), inside 500yrd easy handling rifle. Priorities for the round are in this order. This would be primarily a deer rifle and may be pressed into service for Elk or Caribou. 1. As flat shooting as possible out to 500...something like a 120-140 Accubond at over 3000fps would be great. Zero holdover or under for any range inside 300 or 350yrds on deer sized game. 2. Capable of the above in about a 24" #3 or 4 contour barrel 3. Factory ammo-just in case- would be a plus 4. Barrel life, if it will get 700-800 rounds then that's good enough. 5. Rather if it had no belt, but that's not hard and fast. What do you think? What cartridge comes the closest?