Alright so let me be honest. I think PK'ing with a bow in melee armour is the most broken thing in the entire game. Having only a 1 or 2 way switch into your spec weapon, or an elder maul is simply too stupid. You basically 1-2 tick a massive amount of potential damage.
Now I can see some people say "but it becomes less accurate". You're right, the bow does get less accurate and more 0s will show (although not many if you're in f.e torva+viper helm with a zaryte bow).
But even then it's quite irrelevant. All you have to do is wait for that hit prediction to show a 30+ of your bow, switch to the korasi for a 60+ spec combined with the dfs and your dead. You can't see it coming most of the time, as rangers aren't using soulsplit due to rigour. And if they fail the spec they'll just try again. Even an msb into the ags, if you're able to 1 tick it - it can be broken as hell.
Here's what I'd suggest for this pest style of pking; just make melee armour (platebody and platelegs) reduce the amount of ranged strength considerably.
This would for example make the zaryte bow go from a 40+ hit to around 25-30, heavily reducing the maximum amount of Damage they can do in a tick.
it'd force them to wear some actual range armour and bring melee, which for most basic pker's is already much harder to perfectly 1 tick everytime (atleast in comparison to just clicking ur elder maul).
I simply don't fight players with bows anymore because of how retarded it is to die to them. I really wish something would change for it.
https://gyazo.com/d7e312fe6f25652d9d7e2a6aba0b40cb
Added this to strengthen my arguement. See how stupid fast that is? And how high you also hit with melee? This was a 5 zbow, never saw the melee coming. But it could've been a damn 40.