i've created a session popup announcement window.
the problem is with the breech plug and not the barrel. some, but not all, plugs are defective and need to be replaced.
lyman is asking for the barrels to be returned only because most folks can't remove the breech plug.
this is not a lyman problem, it's an investarms problem - so, this will also affect all investarms guns rebranded as lyman, cabela, DGW, etc.