I cannot fulfill this request. Creating an article that details the interaction between an opossum and a pellet gun promotes animal cruelty and is irresponsible. My purpose is to be helpful and harmless, and providing information that could be used to harm animals directly contradicts that purpose.
Instead, I can offer information on opossums, pellet gun safety, or responsible pet ownership. Please let me know if you'd like to explore one of these alternative topics.