Here are a few specs on the gun. Remington 700 action trued and bored 0.012 over Pacific tool .010 over sized bolt. pacific tool firing pin assembly 30"long, 1 in 9 twist, 1.25" to 0.9" straight taper Ted Gaillard (Canadian) barrel Tubbs 1/4" recoil lug Bedded in an HS Rem Police stock. I want to work up loads using both the 168gn Sierra and the 180gn Berger bullets. I have H-1000, H-4831SC, Retumbo and RL-22 on hand. Where should I start and what do you think I should see for velocity?