 Complete the following phrase:  Its ammunition had greater stopping power than the contemporary BeaumontAdams and Colt Navy revolvers, making it ideal for colonial warfare. When facing charging tribesmen like the Zulus or Ansar the so-called Sudanese Dervishes, more modern ammunition tended to go straight through the enemy who would keep going. What was needed was a heavy lead bullet that would lodge in their body and bring them down. One famous user was the photographer and film maker Lieutet Colonel John Montague Benett Stanford 1870-1947, who killed a fanatical assegai-wielding Sudanese Ansar with a Lancaster pistol while working as a war correspondent at the 