Wasn't sure of the best place to ask this, but I need a quiet AND effective round - rifle or handgun - that is capable of dispatching a possum or similar-sized critter inside the chicken pen, without scaring the next 6-month's egg production out of the birds. Thursday evening after work, I was making my nightly rounds in the pen to gather eggs and check for pests, and found a possum on the prowl, very near the nest box. While the possum (a fairly young one, but plenty of teeth) was blinded by the headlamp, I shot it with my LCP, but the noise was enough to induce panic in the guineas and chickens. I'd like to be able to kill the next varmint with spooking the birds so much. Any suggestions?