Thanks Dave-- Just got registered, this seems like my kind a board. Just loaded up some 200 Grain Nosler BT's with 89.5 of H4831. I shot a starting load with the barnes X 160 grain bullet yesterday and it felt like a 30-06. I wish these bullets were cheaper. Has anyone tried the barnes X 275 grain bullet? I'm breaking in my Sendero this week, this rifle is awesome!