I've noticed a couple of posts that mentioned riveting as a possibility when a patched boolit is seated into the case. This sounds like it could be a dangerous thing.
Started patching some 311299 from my new NOE mold. I patched them out past the ogive which leaves about .312 of the boolit in the case when seated into my 308.
I cast them from water dropped wheel weights with some some magnum shot added. I'm thinking they are about 18bhn.
I would have thought that the gases would put pressure on all exposed points of the boolit in the case, preventing expansion from rear forces until the boolit is in the neck.
Has anyone experienced riveting of their boolits?
What are the signs of riveting?
Should I patch them just forward of the bands and leave the bore riding portion bare?