Kind of a harsh way to introduce the gun but yeah you can train it if all you want to do is pheasant hunting. It's not ideal to go wild birds initially as your dog is probably going to start chasing way out of gun range. OB first, then ecollar condition, then try the dog out at a game farm so the dog will know what's it hunting for. Plus, you get a chance at letting the dog make all the connections.

If you want to waterfowl, then get a book/program like Dahl, Lamb, Lardy, etc. There are others out there much more experienced with labs then me.