When hog hunting in the southern US, is there any concern about the amount of stray bullets entering the ground/soil and causing metal pollution?

Watched some videos of people hog hunting with guns. One video even had a guy on a minigun on the back of a truck. And all I could think about is all the bullets entering the ground. Aint no way those are being recovered, so is there any concern about all that metal being in the ground and staying there?