I have a 30 BR, I do not use it for serious competition only for myself. I have been using H4198, Why? everyone says too. Have been wondering and reading about reloads for a 30 BR but can not get any info.,only use H4198) Is there any others,powders) I can use? Is H322, RL-7 or Acc 2015 good to use and how do you know if a powder is right? Thanks for your help.