@valleyforge Pitbull reolvers have little spring-loaded nubs on the extractor star that go into the grooves on the shells. When one loads, he must overcome the spring. Other clipless revolvers typically have some kind of a positive mechanism: either a cam that rotates the extractor star into grooves, or a collet-like expanding petals. Rogers Medusa is the latter and the petals are also spring-loaded like on Pitbulls.