Neal,
Sorry to hear of your problems..
Shooting the same ammo as before?Same lot #?
Looks like GDHPs?
Lubed well-sometimes this makes a big difference..My barrel has a bit more lube on it than your's in the pic..
Don't know if this may make a difference,but thought I would mention it..
Ammo OAL, and lube would be what I would look at IMO..W/O being there..
YMMV
Brenden