I just had a scary mishap and not sure what, why, or how this happened. Please lend advise. I just earlier today purchased a beautiful condition used blued West German Walther PPK/S. This is going to be my carry gun. I brought it home and cleaned it. Loaded the mag and racked the slide to check how it chambers a round and had some issues with the very first cartridge feeding. I removed the slide and shook the cartridge out of mag well and put mag back in and same thing happened. This time there seemed to be two carts coming out of magazine and mag would not come out without pulling on it. I think now I did not notice but I thought I cleared the barrel but maybe not???? Any case I put mag back in (3rd time) and racked the slide and it fed a round and hammer followed sending a round into the wall straight ahead with a big explosion! After my wife came down to see what happened (LOOOONG Story!) I sat down to go over what had happened and noticed there were not just one empty brass shell but (3)!!! I looked around and noticed a round had hit the side wall at my 10 and another at my 11 o'clock!!! OMG! I can't tell you how many lessons learned came from this cleaning but again a different post. What I need to know is why and how would that happen? What would be cause? Is it bad gun, magazine or is it completely my fault? Why would th hammer have fallen when slide was racked? What do I not know about the Walther that could have killed 3 people with one shot if I was demonstrating my new gun to someone? Also, will S&W look at German made Walthers imported by Interarms? I'm shaking over this and would appreciate any advice (short of getting rid of my guns). Already trying to convince my wife not to make me do that.