Sunderlal Loube (34) and Suresh Korku (32) were collecting the used (fired) shells when the incident took place, said assistant sub-inspector Surendra Kumar Shukla.
While Sunderlal died on the spot, Suresh was hospitalised and was in a serious condition.
"We have registered a case and further investigation is on," the ASI added.
According to the police, people illegally enter the LPR area to collect the fired shells which are sold to scrap metal dealers.