Not for this poster ! ? ...
So while it may be said better for you m it's not what is better for them .
One Shooter One Spaniel One Retriever
I have never introduced a shot to a puppy. It just happens over time and while training. Start by having a someone shoot a training pistol and throw bird or bumper from the field. Never ever, shoot next to a puppy. And I agree, a dove is not a good bird to start with.
I wish people would come ask for advice before they do something like this. Difference between a .22 and a 12 or 20 ga is night and day. You are lucky he seemed to work thru it. Now stop hunting him before he develops any bad habits, get him trained, introduce gunfire more gradually as describes above in some very good posts. My dogs have always had a big desire to retrieve, so I have used bumpers when introducing gunfire, it will depend on how your non-force fetched dog handles birds. If he likes to chomp and chew them, you might want to wait till he has better mouth manners. In my situation, helps many of my neighbors shoot guns, and it has helped my pup adapt. Not sure why as we have not done many gunner marks yet, but when he hears a shot his ears go up and he is looking.
Nate Baxter, DVM