I think the reason behind using a pellet gun is to inflict as much pain as possible before you finely kill him, possibly so they experience as much pain as they caused you in having to work with their product.
At this point I may need to remind you of what the Lord said, Forgive your enemies and do good to those who abuse you, (my translation) have a good day.
Mainstream Engineering Certified.
HVAC/R PM Technician.
410A, & GREEN HVAC/R Technician.
Working not as to please men but to the Glory of Christ my KING.