sentences:  The firing cycle of the Mk VI guns used on "Swiftsure" was claimed to be 15 seconds while that of the Mk VII guns on "Triumph" was 20–25 seconds.Each gun was provided with 90 shells per gun.They had a powerful secondary battery, being the only British battleships to mount 50-calibre 7.5-inch guns; these were of a different type than the 7.5-inch guns mounted on later British cruisers.