CWUgirl

I think your comparison of trap shooting to rifle shooting is absurd. Having shot more than my share of trap and spent many hours at the bench, try as I may, I fail to see any similarity between the two. How does a moving shotgun barrel compare to that of a sandbagged rifle at the bench?
As far as sporting clays go, yes, some of the angles presented more closely simulate what you encounter in the field. However, these courses are not widely available and the cost for a round can be prohibitive.
If shooting trap from further distances is still too easy for you, I have another suggestion. Try scaling your loads back a bit. I recommend one ounce of 7 1/2's in front of 23 grains of Winchester 452AA. Still too easy? Try a 7/8 ounce load. I believe you will find this more difficult than "bringing death down" on the wildest flushing rooster with an ounce and a quarter of number fours. In fact, I think killing pheasants is "easy".