Only guessing, but is it possible that the pheasant and chukar are preserve birds? I hadn't seen mention of chokes, distances or confidence in the pattern board, but you may be more than well covered by an ounce of #7 or #6 for the bigger birds. I'd suppose #5's are just fine. I think reloading is a great option, but that doesn't mean someone can't mix in factory shells with their shooting.