perforation has a cooldown at lvl 10 ?

[jirayadu69 0]

perforation has a cooldown at lvl 10 ?

[Unknown 0]

No, you can check here -> http://www.realmpt.com/skills/archer/tier3#skills

 

Delay : None

[idanqwe 0]

No, you can check here -> http://www.realmpt.com/skills/archer/tier3#skills

 

Delay : None

yup,

it has no delay.

 

but I would suggest you to use AOR for exping.