 With most rifles chambered in .303 British being of military origin, success in reloading the calibre depends on the reloader's ability to compensate for the often loose chamber of the rifle.Reduced charge loads and neck sizing are two unanimous recommendations from experienced loaders of .303 British to newcomers to the calibre.The classic FMJ bullets are widely available, though purchasers may wish to check whether or not these feature the tail-heavy Mk 7 design.