I see there are many choices for the 30-06. Where is a good place to start. IMR 4895,H4895,3031,2400,#7,#15,H380,A2230,A2460,748,7 60. Where should i start for some good longer range(200 yds or so) hard hitting loads with cast. I'm using a 03A3 and 180 gr gc (whatever alloy i need)......I really like versitlity of #15 with other rifle calibers and J bullets , but is is good with cast. Is there other better choices.