Guild Wars 2

The skill Life Siphon’s (necro main hand dagger #2) description says that its range is 600 – but, it appears to be smaller (my guess would be it’s somewhere between 400 and 500, but that’s just a guess).

What makes me think it’s smaller?
Well, there are those red lines below your skills that appear when the target is out of range – with Life Siphon it often happens that you’re out of range even if the red line isn’t there (and the red line displays just the same as for another range 600 skill, Dark Pact, that’s right next to it on the skillbar, so it isn’t the problem).

Easiest way to reproduce this?
Just approach an enemy until the red line below the skill disappears. Then use Dark Pact (or another range 600 skill) – it works just fine. Then use Life Siphon – you’ll get a stream of “Out of range!” popping up. And you need to take quite a few steps forward for the skill to start working (assuming your target doesn’t move, naturally).