I don't have any bottom feeders, but the accuracy tests in the "American Rifleman" done on a Ransom Rest seem to show better accuracy for revolvers than semi's. These tests are usually preformed on factory guns. It may be a different story for guns that have gotten the "money is no object" gunsmith treatment.
I think this is especially true for "pocket carry guns". Some of the tests on small semi auto's showed results so poor that the editors had to change their testing protocol, and run them at 7 yards instead of the usual 25 yard handgun range.

rat