A double-action revolver works best with speed loaders. At the range, run reloading drills until you’re competent and learn to allow your speed loader to drop to the ground. In a life-threatening situation, the empty speed loader is expendable. Stores are full of replacements, but nobody can replace you. Certain bullet types work well with speed loaders, others do not. Avoid wadcutter or semi-wadcutter ammunition. It can hang up at the chamber mouth. Jacketed hollowpoints or softnose bullets work best.