Ok, Ok, Uncle!
Been reloading for about 45 years now. I learned not to "pour" loaded rounds into containers (when one goes off, the bullet stays right where it is, but the brass sure does some damage!) or drop them onto concrete floors (yes they CAN go off), not to mix powders (you have to throw it ALL away), not to use substandard components (in the bottom of the box at an auction, for example). But I'll tell you about my first self-imposed problem back in the early 70s.
I reloaded about 100 .357 magnums so my brother, father and I could go out plinking. They were medium loads, fairly weak, more of a stronger 38 special. When it was my brother's turn to shoot, he loaded five into one of our two Dan Wessons and proceeded to miss the target altogether for the first three shots. We busted on him a bit (ok, quite a bit), until he walked up to 10' away and shot the target...no hole! The last one was in the dirt at his feet....nothing came out. I think we all turned white at this point.
We rolled the cylinder out and started looking at the barrel...you could see a bullet in the muzzle, you could see another just past the forcing cone, and after we took the shroud off and placed the barrel in my father's x-ray machine, 3 in between those two. Man, were we lucky. My father is gone now, but my brother still remembers to bust my chops about it once in a while.
I have three Dan Wessons, and I'll testify to their strength...and unfortunately, also to my young stupidity. I probably have not shot a factory round in 20 years, except occasional surplus...thanks God for reloading...and lessons learned.