Goose a lot of people offered advice to you when you posted about how many pheasants you were crippling. They offered you advice as to ammo and patterning your gun. You also asked about your dog and cripples so suggestion were made to help you. Maybe you shouldn't be so harsh on those who...
It's been 30 years or so since I had any trouble shooting. I have missed a few here and there but overall, I seldom miss. I always try and limit myself to shooting a limit of 15 dove with one box of shells. Sometimes I have to break open a second box but not often. Pheasants are pretty easy...
Could be, I had a dog that didn't handle higher fat and protein food. With mine, I am feeding each 2 cups of 30/25. They are 70 and 58 lbs. Once I start hunting hard the male will get 3 cups.
Isn't that what I said? Basic Obedience comes first. Doesn't sound like this dog has been through a training program. You can't re-enforce with the collar what the dog doesn't know. The progression is OB, CC, then FF for a basic 3 month program.
I wouldn't encourage that if the dog has not been through a basic obedience training program. After my dogs have been through OB, CC, and FF I begin quartering work. It takes 3 people and best started on a football field or open area, not in tall grass. 2 helpers on the sides about 20 yds...
Quartering drills, lots of obedience, including the whistle sit. When it comes to training and doing it right, nothing is easy. Training is done in the off season, not in season. So no quick fix.