The mass shooter in Uvalde, Texas, bought more than 1,000 rounds of ammunition, more than what soldiers typically carry into combat, law enforcement announced Friday.

Officials recovered 315 rounds of ammunition from inside the school, above the 210 standard ammunition load a typical soldier brings into combat, according to CBS. The colossal 1,657-round stockpile from suspect Salvador Ramos indicated he was gearing up for a massive gunfight, an official told the outlet.

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Of the 315 rounds found in the school, 142 were spent cartridges and 173 were live rounds, meaning the shooter was believed to have discharged under half of his stockpile during the shooting, Steve McCraw, the director of the Texas Department of Public Safety, said at a press conference Friday. An additional 922 rounds of ammunition were found outside the school, according to McCraw.

Authorities found 60 magazines from the shooter, with 58 found near school grounds and two at his residence. The majority, or 31, of the magazines brought to the scene were found in a backpack left on school property outside the building, per McCraw. Another magazine was also found outside on school grounds, and 15 magazines were discovered near the site of his car crash, officials added. There were 11 magazines in the school, three of which were on the suspect's body, according to McCraw.

A soldier usually carries seven magazines that hold 30 rounds each into combat, according to the report.

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Ramos purchased at least two semi-automatic rifles for his attack from Oasis Outback, a local hunting and fishing store, just after he turned 18, according to the timeline of events predating the shooting. He made the purchase with a debit card and tried to get his sister to purchase a gun, but she declined, according to McCraw.

The shooter killed 19 schoolchildren and two teachers during his rampage. He was subsequently killed by law enforcement.