Oh you guys should see how the built up the grounds and trimmed the shrubs at the Remington factory club at Illion
Ecomentalists would despair!
Remington fired tons of rounds at that club. The empty hulls were used as "filler" on the grounds to build up the fields . The club is on a hillside and the fields have been built out of the side (sort of) so the hulls were used to build up the grounds.
As far as I know Remington no longer uses the Illion club for test firing.