Hey Dino... how about you actually read the entirety of the thread instead of responding to a post on the first damn page? I discussed this issue in much more detail and admitted some oversights on the drum mag issue in numerous posts.
I am an FFL, an NRA Certified Instructor, a gunsmith/metalworker, I restore antique firearms for auction, and I have over a dozen tactical training courses under my belt. Don’t be so quick to cast aspersions.
As I read through the thread, I saw that others had called you out on your errors later, so sorry for the duplication. The fact that you were an order of magnitude off on the weight led me to the assumption that you had never touched a cartridge before.