In revolver matches the arm must not be used as a single loader or loaded so as to use a limited number of chambers in the cylinder. The cylinder must be charged with the full number of rounds for which it is chambered, and these must be shot consecutively. If scores are shot in ten shot strings, the cylinder shall be charged first with six rounds and then with four rounds. If the cylinder only contains five chambers, then the ten-shot strings may be shot in two strings of five each. In Matches C, D, E, and F and indoor or gallery events, the arm shall in all cases be charged with five rounds.
4. _Position._--The position shall be standing, free from any support, the pistol or revolver being held in one hand, with arm extended, so as to be free from the body.
5. _Arms._--Any revolver or pistol which in the opinion of the executive committee complies with the conditions specified in the various matches will be allowed to compete in those events. Revolvers or magazine pistols that have been adopted by any government for the armament of its army or navy, or such as in the opinion of the executive committee are suitable for military service, will be allowed in Matches C, D, and E. Among the arms which may be used in these matches are the .38-caliber Smith & Wesson or Colt Military; .44 Smith & Wesson, Military or Russian model; .38, .44 or .45 Colt New Service; .45 Smith & Wesson Scofield; .44 or .45 Colt, Single Action Army, Webley & Scott Mark IV, and the following magazine or automatic pistols: Colt, Webley & Scott, Luger, Borchardt, Mannlicher, Mauser, Mors.
6. _Sights._--In open sights, the notch of the rear sight must be as wide on top as at any part. Aperture or peep sights or any covered or shaded sights will not be allowed. The use of a notch for the front sight will not be permitted. Sights may be smoked or blackened if desired. Sights on military arms, if modified to suit individuals, must remain strictly open, strong and substantial, and suitable for military use.
7. _Trigger-Pull._--The trigger-pull as specified in the various events shall be determined by a test weight equal to the minimum pull applied at a point three-eighths of an inch from the end of the trigger and at right angles to the pin through the trigger.