I have a model 700 sporting an 18'' .308 1-8 twist barrel by AAC. I also have a decent selection of 200+ grain 30-cals to play around with... 208 A-Max, 220SMK, 220gr Sierra Pro Hunter, Hornady 225gr HPBT, and a pile of blemished 240gr SMK. Powders on hand: 4895, 4064, 4166, BLC2, CFE223, TAC...