Unusual behavior is as follows: was fighting off some skeletons with my Kilowatt Pulsar. When I would hit them with the "big" shot, it would deal 34 damage. However, if I fired a shot, then changed to my Ascended Calibur before the shot made impact, it would deal 133 damage. As far as I can tell, the numbers being displayed were accurate, insofar as it took much fewer shots to defeat each skeleton. It occurred close to 100% of the time if I only fired one shot with my pulsar. Occurred close to 0% of the time if I fired two or three shots with my pulsar.
Other possibly relevant information: depth 25, Blight Boulevard. Other gear was Fiery Atomizer, Sinister Skelly Mask, Wise Owlite Shield, Miracle Cloak. No trinkets. Solo run.
EDIT: went down a floor, realized screenshots wouldn't hurt.
first image is the normal damage http://cloud.steampowered.com/ugc/578932944879903472/5E374761A61747FF4D5...
second image is the higher damage due to weapon change http://cloud.steampowered.com/ugc/578932944879911112/7802B5835B25954E1C3...
Quite a odd bug, I'll have to see if it does Tge same with my Polaris.
As much help this bug is, I think it would be a game exploit if you knew about it and intentionally did it. Also, if a few otters could test as well that would help. Thanks.