A few ranger feats share the hunter's edge benefits, namely Animal Companion and Warden's Boon (and the feats that require it):
Ranger: When you Hunt Prey, your animal companion gains the action's benefits and your hunter's edge benefit if you have one.
By pointing out vulnerabilities, you grant the benefits listed in Hunt Prey and your hunter’s edge benefit to an ally until the end of their next turn. Depending on whether you call out or use gestures, this action gains either the auditory or visual trait.
However, it's unclear to me how this should play out for the Precision edge:
You have trained to aim for your prey’s weak points. The first time you hit your hunted prey in a round, you also deal 1d8 additional precision damage.
Is there 1d8 per round per beneficiary (ranger, animal companion, warden's boon ally, etc.)?
This was my first reading, but then I became concerned that this could skirt into 'too good to be true' territory. (For a while I was especially concerned about sharing the Masterful Hunter Upgrade in this way with, say, a fighter; later it became clear that this is impossible because there is no equivalent to Masterful Companion in the Warden's Boon feat line)
Or is there 1d8 per round, used by whichever beneficiary hits first?
Compared to a lone ranger, it's less likely that every beneficiaries misses all their strikes thereby wasting the 1d8.