BC CORE · chapter 2

Firearm Actions Explained

By Hunters Guide. Checked against RCMP Canadian Firearms Program and BC Wildlife Federation sources on September 18, 2026.

An action is the group of parts that loads a cartridge, holds it for firing, and gets the empty case back out. Chapter 2 of the CORE course covers five: bolt, pump, break, lever, and semi-automatic.

Learn them as mechanisms, not names. Know where a cartridge travels inside one and the right way to unload it follows.

What is a firearm action?

An action is the mechanism that feeds, locks, fires, extracts and ejects. Every firearm you meet in the field does those five jobs in some arrangement.

The division that changes your handling is single shot against repeater. A single shot holds one cartridge, so clearing the chamber clears the firearm. A repeater carries a reservoir, a box magazine or a tube, that refills the chamber as the action closes. Every error below comes from forgetting the reservoir.

The federal course lists "evolution of firearms, major parts, types and actions" as its opening topic, before firing technique. Mechanism first, then handling.

The five actions, side by side

The five actions differ in two ways: what moves the working parts, and where spare cartridges wait. Those two facts predict how each one gets unloaded.

How a bolt action works

A bolt action is a manually operated repeater. A cylindrical bolt slides back and forward in the receiver, and rotates to lock.

Lift the handle to unlock and pull rearward. The extractor drags the fired case out, the ejector flicks it clear, and the forward stroke feeds the top cartridge into the chamber. To prove it safe, remove the magazine first, or open the floorplate if it is internal. Then draw the bolt fully back, check the chamber, the magazine well and the bore, and leave it open.

The mistake is the short stroke. People pull the bolt back an inch. Far enough to feel resistance, not far enough for the ejector to work, so the case rides forward again.

How a pump action works

A pump action, also called a slide action, is a repeater fed from a tubular magazine. You cycle it by sliding a fore-end under the barrel rearward and then forward.

Rearward travel unlocks the breech, ejects the spent case, and lets a carrier lift the next shell from the tube into line. Forward travel chambers it.

So proving one safe starts at the tube. Empty it through the loading gate, or cycle the rounds out and count them. Then hold the action open and check the chamber, the carrier, the tube and the bore.

The mistake is one cycle and a closed action. Rack it once, see an empty chamber, let the fore-end run forward, and that stroke chambers the next shell from the tube.

How a break action works

A break action has barrels that hinge downward away from a fixed standing breech. Push the release lever and the chamber mouths are right there in front of you.

Push the top lever, tip the barrels down, and extractors lift the cartridge heads clear for your fingers. Singles, side by sides and over unders all work this way. None has a magazine, which makes proving one the quickest of the five. Open it, lift out every cartridge, check each chamber and each barrel from the breech, and carry it open.

The mistake is checking one barrel of two. Your eye confirms the right chamber, your brain files the gun as empty, and the left one still holds a shell.

How a lever action works

A lever action is a manual repeater worked by a lever looped behind the trigger guard. The lever drives a bolt back and forward, and the rifle usually feeds from a tube beneath the barrel.

Swing the lever down and forward and the bolt travels rearward, extracting and ejecting while a carrier raises the next cartridge. Bring it back up and the bolt chambers that cartridge and locks, cocking the hammer. To prove one safe, empty the tube through the loading gate before you touch the lever. Then cycle it fully and check the chamber, carrier, tube and bore.

The mistake is working the lever with a full tube and expecting progress. Each cycle ejects one cartridge and chambers another, so you can cycle a loaded rifle all afternoon.

Why half-cock is not a safety

Half-cock is an intermediate resting position for an external hammer. A shallow notch catches the sear part of the way down and holds it there. It is a hammer position, not a safety device.

The distinction is mechanical. A notch is a small piece of shaped steel, and wear, grit, or a knock can let it slip. If the firearm is loaded, a live cartridge is sitting under that hammer waiting for the slip. Many lever guns have no other manual safety, which is why the notch cannot carry the burden.

So treat a half-cock hammer as a loaded firearm, because that is usually what it is. Unloading makes a firearm safe. A notch does not.

How a semi-automatic action works

A semi-automatic uses energy from the cartridge it just fired, tapped as gas or recoil, to cycle its own action. It fires one shot per pull of the trigger.

Firing drives the bolt rearward. The case ejects, the striker resets, and a spring runs the bolt forward to strip the next cartridge from the magazine and chamber it. The firearm reloaded itself while the recoil was still pushing your shoulder.

So the magazine comes out before your hand goes near the bolt. Then lock the bolt back and check the chamber, magazine well and bore.

The mistake is racking the bolt first. With a loaded magazine in place, cycling the bolt ejects one cartridge and chambers another, so what you just cleared is loaded again.

How much of this does the practical test cover?

A practical handling examination puts real firearms in your hands and scores your procedure. In British Columbia it draws on these same five action types.

The BC Wildlife Federation states that the practical examination requires "the safe handling of two of the five types of firearm actions, including the identification and loading/unloading use of dummy ammunition". Two of five, and you do not choose which two. Identification is scored too, so naming what you hold matters.

Describe the cartridge path out loud on whatever you pick up, then run the check. If the acronyms themselves are shaky, read ACTS and PROVE explained, then work through the firearm actions practice questions.

Questions about firearm actions

Which two actions will the examiner hand you?

You do not get to pick, so prepare for all five. The BC Wildlife Federation says the practical examination covers two of the five action types and that the examiner provides the firearms, so turning up hoping for a break action is a poor plan.

Is half-cock a safety?

No. Half-cock is a resting position for the hammer, held by a shallow notch, and a notch can be worn, dirty, or jarred loose by a knock. It reduces one risk while the firearm is still loaded. Unloading is what makes a firearm safe.

Why do single-shot and repeating actions get proved differently?

Because a repeater carries a second supply of cartridges. On a single shot there is only the chamber to clear. On a repeater the magazine refills that chamber as the action closes, so it has to be emptied first or the check undoes itself.

Does a semi-automatic bolt always hold open when it runs dry?

Not always. Plenty of sporting semi-autos close the bolt on an empty chamber instead of locking it back, so a closed bolt tells you nothing. Lock it open and look.