Range of ignite

[Razyl]

A very simple question: what is the range of ignite spreading due to our fire mastery?

[Syana]

Might be a simple question, however, I'm not sure it has an easy answer.

From personal experience it seems to largely depend on a targets hit box, but sometimes even that doesn't seem to be true.

[Razyl]

So, let me formulate it in another way. The demonic inquisition fight should be considered as a single or 2-target fight? The two bosses are periodically tanked far away, but when they are close ignite can spread hence stacking mastery might be useful. Clearly all of this depends on the range of ignite....

[Syana]

I consider it a 2-target fight, however this is because the tanks I play with bring the bosses together again after each whirlwind to increase the dps. If yours don't, it might be more of a ST fight.
The easiest way to check is to look at your ignite up time on Atrigan, it won't be 100% accurate because you target him periodically, but will give you a good idea. For me ignite is up on Atrigan around 80% of the time, so he's probably within range of ignite about 60% of the time.