In 15 years of building Wild Bunch guns, anything less than 16# give trouble; not returning to battery, not enough force to fully chamber with a full magazine, broken firing pin springs(which lead to firing pin stops falling out), etc…
16-17# have never failed to cycle fully. Never seen a dip when the slide closed. And this is with a lot of one handed shooters of the weaker persuasion. Seen plenty of dip when some jerk the trigger.
Poor videography but this is with a 230 gr at 720-725 with 17# recoil and hammer springs.
IMG_0973.mov