You didn't get penetration even with the elephant gun?

*She was the wife of Burt Gummer in the first film. Like Burt, she is a firearms enthusiast. The two worked as a team in being prepared for defending themselves. However, because McEntire chose not to reprise her role, Heather left Burt. It was stated that sometime between Tremors and Tremors 2: Aftershocks, she left Burt when he became too paranoid even for her and she divorced him and moved away. Burt still cares for her apparently as he uses her name ("Heather") as part of the passcode of his bunker's security system.

In Tremors: A Cold Day In Hell, Burt's son Travis B. Welker reveals that he got his HK 91 from Heather. Burt is angered to learn of Travis going to Heather, leading to a brief argument between the two.*