I am new to reloading and do not know where to start..I have Lee Classic hand loader. The only store I can get components is le baron I would like to use what is available to that store, I have RUGER GP100, 106mm Barrel and planning to buy the Winchester 158 grain JHP notched bullet. Does anyone use this particular bullet and if so what powder and primer combination do you use for your 357 magnum? Btw. they only carry Winchester and IMR powder..Thanks