We’re almost in Destiny 2 Year 3 and Kill Clip still doesn’t re proc or reset the timer if you reload after a kill while Kill Clip is still active. I don’t recall whether D1 Reactive Reload had this same thing. Reloading after getting a kill should always grant a 50% damage buff for 5 seconds, regardless of whether it’s already active or not. Doing so while it’s active should reset it back to five seconds.
Kill clip would easily be the best perk to use in crucible if they did this. It’d break pvp.