I am absolutly new to reloding. I would like to reload .243 wit 85 gr Barnes TSX,to be used in a CZ 550. A friend who has some experience recomended to use IMR 3031 powder and we have some Winchester large rifle primers No WLR. Are this components O.K.? I would like some advise from you,since I can get some other powder brands like Hogdon or Alliant. Any input will be apreciated.