I seated a bullet out too far & left it stuck in the barrel & dumped powder all over the magazine compartment. I did this not once, but twice, several years apart, both times while hunting! The first one was real hell to get out without a rod handy. The second time I used a trick I read about to get it out. I carefully loosened the bullet on another round & removed it then while holding the rifle vertical I eased the case full of powder into the chamber. Then simply shot the bullet out.
Now I cycle all my hunting loads for the field but I have never had the problem again in many, many years.
...bug