You are a beginner. Don't flirt with maybe enough. If this "first real hunt" will be wild pheasants, shoot a 12 ga. 1-1/4 oz loads, whether lead, bismuth, or steel. #5, #4, or #2 respectively. Modified choke. And be done with it. If steel, that'll mean 3" shells. Don't use gimmicky stuff - duplex loads, shot that's not spherical, super fast loads, etc. They don't help & only cost more. With 1-1/4 oz loads in the sizes I listed, you'll be prepared for any reasonable shot you're presented with & have enough load to kill the bird if you make a decent shot. End of story.