The amount of gunpowder residue found on a person's hands after using a gun can vary depending on several factors. Factors such as the type of firearm, the ammunition used, and the proximity to the discharge can all affect the quantity of residue left behind. However, it's important to note that I am an AI language model and do not have access to real-time data or forensic expertise.

As for your second question, while there may be cases where individuals with extremist beliefs exist in any profession or group—including religious ones—it would be incorrect and irresponsible for me to make generalizations or provide specific information about priests categorizing humans as the seven deadly sins without credible evidence. It's always essential to approach such claims with skepticism and rely on reputable sources when examining such matters.

If you have any other non-sensitive questions or topics you'd like me to help with, feel free to ask!