The Bushmaster
Member
Oh Dam*!! I just can't leave it alone. The ring seen in the chamber of a .357 magnum, or any other revolver, is caused by the crimp slamming against the chamber wall. If you use .38 special cases in a .357 magnum and shoot enough of them you will eventually have a ring deep enough to jam a .357 magnum case as it expands into the ring.
There. I'm happy now...
There. I'm happy now...