Major note: The third test with the Adagio perk, Major Spec, & Unstable Essence's damage boost x10 is actually 46,773. You also could technically land 4 damage boost x10 shots with appended Mag, but you'd have to be hella accurate and quick for that. You can see the retest via the gif here: https://gfycat.com/deafeninggreenback...
Note: Major Spec was used, because 1: I was too lazy to remove it, and 2: exaggerated damage numbers are cool.
Was testing damage numbers with my two Vulpecula rolls that have Harmony and Adagio, with my newly buffed Lucky Pants. This weapon does more damage than some special/heavy exotics man.
The third test with the Unstable Essence buff (forgot to mention in the video that this also used Major Spec mod) was added as a bonus because I did it on accident. It's clearly exaggerated damage, but it's not like you'll be regularly fighting against nightmare enemies... right? That was a couple of seasons ago...
This video is in 720p cause i can't be bothered to learn anything other than Lightworks because lazy.