Space-time nuclear reactor kinetic calculations based on the well-known computer program WIGLE are compared with measurements from neutron-pulse-propagation experiments. Transients were induced in a heavy-water-moderated, natural uranium subcritical assembly using a coupling extending through a graphite thermal column to a pulsed TRIGA reactor. Results are reported for five keff values ranging from 0 to 0.92, involving cases both with and without cadmium control rods inserted. A unit-cell-homogenization technique was adopted for analysis purposes, with special attention being given to proper parameter assignment, such as neutron velocity averaging. Calculation results compare favorably with experimental results for the interior of the assembly; however, differences as large as 7% are noted near interfaces or boundaries.