Recently I made two mistakes while loading primers using the Lee Auto Prime, hand tool. First mistake- I loaded a primer upside down in a 338 Winchester case. Second mistake, I loaded a second primer on top of the first in a 303 case. The second mistake is more serious since the shell case with the two primers will not exit the auto prime shell holder. I seek advice on how to safely ignite these primers so at least the shell holder can be saved. On the 338 case, I can always discard the case if there is no safe way to ignite the primer. Obviously one way would be to put the shells in a large vice and ignite with a nail but I am unsure about how loud, how safe, this would be be. A second suggestion was again to place the shells in a large vise and ignite the primers with a propane torch. One person though that the primers would "fizzle" rather than explode if heat was used. Any advice would be appreciated. Thanks.