I'm noticing a trend here. The guys from Alberta and Sask who have experience varminting in the west pretty much think this is a non-issue and just one less Magpie.
The "sophisticated" eastern guys who have no experience varminting in the wild west and who would never consider shooting an animal except to eat and almost feel the need to apologize for it even then, seem to think some heinous crime has been committed.
I don't know the OP personally but we do spend a lot of time shooting gophers and magpies and practically anything else wandering around the fields of Southern Alberta. Anyone with any experience in these matters will have experienced less than instantly lethal hits. It happens all the time. Sometimes we shoot again, sometimes the varmint crawls back down its hole trailing its guts. Sometimes we step on its head to put it out of its misery. I have crushed more than a few skulls under my boot.
Anyone who thinks that less than instantly lethal hits are a result of poor marksmanship is invited to come out and show us just how good a shot they are. I guarantee you will get a lesson in marksmanship from just about anyone who has spent any time in a gopher field. There are some seriously skilled riflemen in the fields of Southern Alberta.
I had an experience not unlike this. We were out at a friend's farm and our Jack Russel Terriers were rooting around behind the hay stack when they dragged out a kitten. This cat was so young its eye's were not even open yet. By the time I got the kitten away from our dog it was in no kind of shape. Not quite dead yet, I did the right thing and put it out of its misery under the heal of my boot. Did I enjoy that? No of course not but there was no other option and as the farmer had spent the morning drowning kittens in a bucket of water there was no way they were going to suddenly rush to the vet and spend $3000 to save this kitten's life.
Pic of one of my dogs with a gopher. The really gross part is when the dog crushes the gophers skull in its teeth. They don't break the skin but you can hear the bones cracking.