... Browning was determined to prove the superiority of his handgun, so he went to Hartford to personally supervise the production of the gun. There he met Fred Moore, a young Colt employee with whom he worked in close cooperation trying to make sure that each part that was produced for the test guns was simply the best possible. The guns produced were submitted again for evaluation, to the committee. A torture test was conducted, on March 3rd, 1911. The test consisted of having each gun fire 6000 rounds. One hundred shots would be fired and the pistol would be allowed to cool for 5 minutes. After every 1000 rounds, the pistol would be cleaned and oiled. After firing those 6000 rounds, the pistol would be tested with deformed cartridges, some seated too deeply, some not seated enough, etc. The gun would then be rusted in acid or submerged in sand and mud and some more tests would then be conducted.
Browning's pistols passed the whole test series with flying colors. It was the first firearm to undergo such a test, firing continuously 6000 cartridges, a record broken only in 1917 when Browning's recoil-operated machine gun fired a 40000 rounds test.
