I have a winchester 308 stealth which I have loaded with hand loaded 175 match grade bullets and have several options for a 500 yard competition. Can someone tell me which I should use. This will be my first time and I don't want to look totally goofy and uneducated? I have a Leupold varix III 6.5x24 with target knobs , a Springfield Armory gen 1 4 x 14 x 56, a Weaver fixed 10 power T series , and a Blazer 8x32 with target knobs. I have no idea which to take . Can anyone help???