I have recently been talked out of trying to convert my Weatherby into a long range gun. I have steered towards a Mdl. 700 action. It will be used for eastern deer mainly, but I want enough to take out an elk or a bear possibly one day. I want a gun that is able to accurately shoot 500+ yds. I am not a reloader at present, but will start for the new rifle. I am in Law Enforcement and have been around guns and hunting for about 20 years. I am retiring a .300 Weatherby Mark V. Help me with caliber selection. .280 Rem, .284, 7 mm Rem, 7mm STW, 7 mm RUM, or some other? Thanks alot for your help. Also any direction that you can direct me for good reading is appreciated!