Safety & handling

Single-Action Loading & Unloading: The Safe Five-Round Rule

The five-round rule is not superstition and it is not a tradition kept for its own sake. It exists because on a traditional single action the firing pin is resting on the primer, and nothing but an empty chamber changes that.

Wheel Guns Co. editorial· Updated August 13, 2026· 7 min read

Why five and not six

Open a traditional single-action revolver and look at the hammer. The firing pin is mounted on the hammer face. Lower the hammer fully and that pin travels forward and comes to rest against whatever is in the chamber lined up behind it.

If that chamber holds a live cartridge, the pin is resting on the primer. Nothing is holding it back except the fact that nothing is pushing it forward. A sharp blow to the hammer spur — the revolver falling and landing on its hammer, a knock against a hard surface, a horse going down with a rider — can drive that pin into the primer with enough energy to fire the round.

This is not theoretical and it is not rare in the historical record. It is precisely why the convention exists: leave the chamber under the hammer empty, and there is nothing for the pin to strike. The gun holds five rounds instead of six, and it cannot discharge from a blow to the hammer.

The loading sequence

The elegance of the load-one-skip-one method is that you do not have to count or index anything. Follow it and the empty chamber lands under the hammer on its own.

Step by step, with the revolver pointed in a safe direction throughout:

1. Confirm the revolver is empty before you begin. Open the loading gate and rotate the cylinder through every chamber, looking at each one.
2. Bring the hammer to the loading position. On most traditional designs this is half-cock, which frees the cylinder to rotate. Some designs free the cylinder when the gate is opened instead. Your manual states which.
3. Load one chamber through the gate.
4. Rotate one chamber and skip it. Leave it empty.
5. Load the remaining four chambers in sequence.
6. Close the loading gate.
7. Draw the hammer to full cock, then lower it fully and under control with your thumb, keeping the muzzle in a safe direction. It comes down on the empty chamber.

Unloading

Unloading a traditional single action is done one chamber at a time, and it is slower than people expect the first time.

1. Muzzle in a safe direction, finger off the trigger.
2. Open the loading gate and bring the hammer to the loading position if the design requires it.
3. Rotate a chamber into line with the gate and push the ejector rod rearward to drive the case or cartridge out.
4. Repeat for every chamber, including the empty one, so that you have positively confirmed every chamber rather than assuming.
5. Look at each chamber and, in poor light, feel it. Then close the gate and lower the hammer.

Some short-barrelled traditional designs have no ejector rod at all. On those the cylinder pin is withdrawn, the cylinder comes out of the frame, and the cases are pushed out with the pin itself. It works, and it is considerably slower.

When you genuinely do not need it

A transfer-bar revolver puts the firing pin in the frame rather than on the hammer, and interposes a steel bar between the two that rises only when the trigger is held back. With the trigger at rest the bar is down, and a falling hammer strikes the frame. There is no mechanical path from the hammer to the cartridge.

These revolvers are designed to be carried with all chambers loaded and the manufacturer states so. Loading five in one is not dangerous, merely unnecessary.

The half-cock misunderstanding

A common and dangerous error is treating the half-cock notch as a safety position for carrying a loaded revolver. It is not one.

Half-cock is a loading position. It holds the hammer back far enough to free the cylinder for rotation so cartridges can be inserted through the gate. It is a shallow engagement between the sear and a notch in the hammer, and on a worn, damaged or badly fitted gun that engagement can fail under a knock — at which point the hammer falls from a position with enough travel to fire the round beneath it.

Carrying a traditional single action at half-cock over a live round is worse than carrying it hammer-down over a live round, because you have added stored energy to the situation. The correct carry condition on a traditional single action is hammer fully down, on an empty chamber.

Building the habit

The sequence is not difficult. It is only unfamiliar, and unfamiliarity is what produces errors under distraction.

• Practise with dummy rounds at home, gun verified empty, all live ammunition out of the room. Fifty repetitions makes the sequence automatic.
• Always load and unload in the same order, so that a deviation feels wrong rather than passing unnoticed.
• Count out loud when learning. One, skip, one, two, three, four. Silly, and effective.
• Check the empty chamber before holstering, every time, without exception.
• Apply the rule to every traditional single action you handle, including ones somebody hands you at a range, and including borrowed guns whose design you have not confirmed.

Frequently asked questions

Why do you load only five rounds in a six-shot revolver?

Because on a traditional single action the firing pin is mounted on the hammer and rests directly against whatever is in the chamber beneath it. With a live round there, a sharp blow to the hammer — the revolver landing on its hammer spur, for example — can drive the pin into the primer and fire the gun. Leaving that chamber empty removes the possibility entirely.

What is the load one, skip one, load four sequence?

Load one chamber through the gate, rotate past the next chamber leaving it empty, then load the remaining four. Close the gate, draw the hammer to full cock, and lower it under control. Because the cylinder advances in a fixed direction, the skipped chamber ends up under the hammer automatically, with no counting or indexing required.

Is half-cock a safe way to carry a single action?

No. Half-cock is a loading position that frees the cylinder to rotate, not a safety. It relies on a shallow engagement between the sear and a notch, and on a worn or damaged gun that engagement can fail under a knock — dropping the hammer from a position with enough travel to fire the round beneath it. Carry hammer fully down on an empty chamber.

Do transfer-bar revolvers need the empty chamber?

Not mechanically. A transfer bar must rise between the hammer and a frame-mounted firing pin before any blow can be transmitted, and it only rises when the trigger is pulled, so a dropped hammer strikes the frame. Those revolvers are designed to be carried loaded to capacity and the manual says so. Loading five is harmless, just unnecessary.

How can I tell if my revolver has a transfer bar?

Look at the hammer face. A firing pin visible on the hammer means traditional — load five. A flat hammer face with the firing pin in the frame breech suggests a transfer bar or hammer block, which the manual will confirm. On Ruger single actions, three screws across the frame side indicates an Old Model without a transfer bar despite the brand. If you are not certain, treat it as traditional.

How do I unload a single action with no ejector rod?

Withdraw the cylinder pin, remove the cylinder from the frame, and push the cases out with the pin itself. Some short-barrelled traditional patterns are built this way. It works and it is considerably slower than using an ejector rod, which is worth knowing before you buy one for anything time-sensitive.

Keep reading

• The Single-Action Revolver Guide: Loading, Carry & Safe Handling
• Best Single-Action Revolvers for Cowboy Action, Plinking & Field Carry
• Single Action vs. Double Action for Hunting and Field Use
• The Revolver Collecting Guide: Model Numbers, Dash Variants & Lock vs. No-Lock