Welcome to the new PGCA Forum! As well, since it
is new - please read the following:
This is a new forum - so you must REGISTER to this Forum before posting;
If you are not a PGCA Member, we do not allow posts selling, offering or brokering firearms and/or parts; and You MUST REGISTER your REAL FIRST and LAST NAME as your login name.
To register: Click here..................
If you are registered to the forum and keep getting logged
out: Please
Click Here...
I would be tempted to disassemble a couple of good rounds and see if the wad is damaged/malformed. There must be hot gases escaping up past the wad on ignition. And I would think that if the cause was cheap plastic case material that it might be noticeable from the outside (discoloration?)