Centurion BP-12 after 100 rounds

I put 100 rounds of Winchester universal heavy load through the BP12 then tear it apart to clean it. What I find will surprise you! Edit: I have since designed a plus two baseplate for the these shotguns! You may print them out for free here https://www.thingiverse.com/thing:5386785
or contact me and I can print them for a small fee. I have also began testing on a second BP12 as I no longer own this one.