Not finding a whole lot of data out there regarding 125 Gr Lead Round Nose and Powder combinations or recipes. Can anyone lend an opinion on what they would recommend. I was given 500 Match Grade hard cast (BHN 17) alloy bullets and want to work up a load for my SW Sigma 9mm. I can find 124 grain Lead Round Nose out there and heavier load recipes but I cannot find what I need. Your help is greatly appreciated.