Here is a beamshot of the ring (left) and another shot after backing out the reflector about 1/4th of a turn (right).
Distance is approx 1 meter, exposure is the same.
Opening the bezel was easier than expected. A pair of hollowed out wooden blocks and a sheet of rubber were used to grip the threaded end in a vice, and the exposed end was twisted with a belt wrench. The piece was heated before this procedure.
I am blown away by the size and brightness of this light. Great fun as a modding host too.
Another order needs to be placed soon!