I tried the search feature without any luck. I am sure this has been asked before, but I am thinking about starting to cast my own bullets. I have been reloading successfully for a couple of years. First, I would want to start casting for my S&W.357 magnum revolver. I am sure it would be fine. Then I thought about casting .45acp and 9mm since that is what I shoot the most. The problem is I just have this fear that shooting lead bullets out of my HK USP .45 and my S&W M&P 9 will hurt the guns. Is this fear justified? Should I worry about using cast lead bullets with an auto loader?