Max number of enemies effected?

So, I'm rank E here and my hydra is only hitting a max of 4 enemies. Apparently this number increases?

Are they in range? It has a very limited range to what I would say is comparable to r1 windmill but not sure.

It's hitting enemies farther away from the hydra than the closer enemies. I tossed the hydra in the big friday prison sword pit in metus at 2am and also tried a huge pile of monsters in shyllien, just 4 were showing numbers each time. I'm very sure they were in range.

I only just got mine (stupid guardcylindermasteryhnnng) and I have noticed that rF is only hitting 4....despite being in the center of a glitched sulfur spider center room...

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