Shooting gophers is one of the best things ever!!!!
I have found after a couple of years of shooting the same area, you have to give them a couple of years to come back in numbers. Shooting them is fun and an effective means of control. If I had land I would encourage them to move over to it lol.
A friend of mine and myself had the best gopher hunt ever about 10 years ago. Went through 400+ rounds of HMR each that day in 5 hours. As we were shooting in prone, gophers were sniffing our shoes! It was quite gross and creepy as to the actual amount. I could not understand how the farmer would have let it get so bad, he had cattle on that pasture, most of the rainwater would have gone straight down all the holes, and not to the roots of the grass.