Maybe I'm looking for something that I can't find with the limitations of the gun/caliber but I'm running out of ideas. How would you develope a load? Gun: New Mark V Weatherby .257 Weatherby mag - Factory barrel, Swarovski 6-18 x 50 scope, Burris Signature Rings with offset inserts. Harris bipod, scope level, PK Brake. Criteria: Develope a load that is accurate enough for deer and pronghorns out to 1,000fpe at impact with either of the 2 bullets listed below. What are the steps (and in what order) do I take to find an accurate LR load for this gun? I really, really want to get either the Wildcat RBBT 130 gr bullets or the Berger 115g VLD's to work in this gun. 1:10 twist. But, I have other bullets sitting on the shelf if the gun won't shoot with either of those. The limitations are: Long throat One, or at the most 2 brass suppliers (Norma and Weatherby, but I think Norma makes the brass for Weatherby), and it's a factory gun. Supplies on hand: Primers: Federal GM215M, GM210, Federal 210, Win WLR Powder: H-1000, Retumbo, Ramshot Magnum, H-4198, IMR-4198, H-4831, IMR-4831, H-4831SC, IMR-7828, RL-22, RL-25 Bullets: Berger 115g VLD's, Wildcat 130g RBBT ULD HP, Sierra 100g, 117g Gameking BT, 100g Matchking, 100g, 117g Pro Hunter, Barnes 100g TSX, Nosler 110g Accubond, and 115g Ballistic Tips Brass: 200 New Norma cases 200 New Weatherby cases Other reloading stuff: Electronic scales, Concentricity gauge, Redding bushing neck sizer, RCBS FL die set, VLD Chamfer tool, Rockchucker Supreme press, Chrony chronograph, and other usual loading stuff. I can shoot behind the house out to 350 Yds every day after work, and I also can drive an hour one way to a 1,000 range.