I'm thinking of shooting some 120 gr BT's in my 7mm-08 XP 100. I have the following powders on hand. AA2520, Benchmark, IMR 3031, IMR 4064 (very little), H450, H414, W748, W760, IMR 4350. I'll be using Remington 9 1/2 primers and new Winchester brass. Suggestions?