 Depending on the bore and bore erosion a reloader may choose to utilize bullet diameters of .308–.312" with .311" or .312" diameter bullets being the most common.Bullets specifically produced and sold for reloading .303 British are made by Sierra, Hornady, Speer, Woodleigh, Barnes, and Remington.Where extreme accuracy is required, the Sierra Matchking HPBT bullet is a popular choice.