I am rebarrelling a Mod. 700 short action to one of three cartridges, 260 Rem., 7mm08, or the .308 Win.. I will be hunting whitetails that weigh anywhere from 75 lbs to 175 lbs. at ranges from 10-200 yards. I have extensive experience with the .308 using 165 gr. bullets and know that it is quite the deer slayer. I am not sure I want another simply because I have not used either of the other two cartridges. Would you please express your opinions on the capabilities and recommended loads for the other two cartridges. By the way, the barrel will be a sporter weight 20" matte finish from Shaw. Thanks.