sentences:  .240 Apex
  
  The .240 Magnum Rimless Holland & Holland (also known as the .240 Apex and the .240 Super Express) and the .240 Magnum Flanged are a pair of centrefire sporting rifle cartridges developed in English gunmakers Holland & Holland in the 1920s, primarily for use in hunting deer and plains game.The ballistic performance of the .240 H&H in factory loads is very similar to that of the .243 Winchester, with a bullet with a diameter of .245 inches (contrary to the .240 name) giving a muzzle velocity of approximately .