That's always the compromise on range/flood. The more flood, the more power it takes to get the same range.
A concentrated beam is great for aiming at targets, but, a narrow beam is not great for FINDING targets. ~ 30 - 40 meters across sounds like a wide beam in abstract, but can seem narrow given the long way away you are looking with it, proportionally.
For example, a throw oriented light like an Armytec Predator XPG2 has a 4º beam angle, and would give a ~35 meter beam width at 486 meters of range...if you could SEE it at 486 meters of range.
The TN31mb is giving you about the same beam width at more than 3x the distance...and allowing vision of stuff at more than 3x the distance.
TO FLOOD a long range target, you are in HID territory, and much more $ and reduced run time/portability, etc.
A Polarion PH50 for example would work to find the critters, and then allow targeting with the TN31mb, etc.
What FOV width did you want to get at the ranges you are looking for the Wiley's at?