There is a time and place to use a .410 and birds which is when the dog is first exposed to gunfire. I used a .410 and birds simultaneously. I planted birds and allowed the dog to scent, point, flush and chase. These were boxed quail. Others use pigeons. After the dog shows an interest in birds, then gunfire. I do it over 2 days. First day is to let them find birds and respond--all of my Britts lock down and hold and I flush. They chase. Fine when they are young, the chase part. I don't discourage the enthusiasm. The next day, I plant a bird, have a friend stand about 75-100 yards away with the gun, a .410. I let the dog find the bird, when it flushes, usually by me, my friend fires the gun. If the dog doesn't flinch or respond negatively to the gunfire, the procedure is repeated but with the gun closer. The next bird is planted, my friend moves 25 yards closer, the procedure is repeated. if the dog doesn't respond negatively to the closer gunfire, we do it again, shrinking the distance. I'm not concerned about dropping the bird with any shots. The fourth repetition is with the friend behind me, firing the gun at the next pointed flush. I have heard of dogs being ruined by a boneheaded owner shooting a 12 ga. over a dog on the dog's first exposure to gunfire. Works for some, but not for most. As a prelude to actual gunfire, I used a cap pistol for a few weeks at feeding time shrinking the distance as I do eventually with birds and gunfire. The birds are integral to gunfire exposure; the excitement of exposure to birds is a distraction to the actual noise of the shot. Gil