Canada · rifles and ammunition

Choosing a Cartridge for Canadian Game

By Hunters Guide. Checked against SAAMI glossary definitions and Quebec provincial hunting guidance on September 22, 2026.

Choose the cartridge for the animal and the distance, not for the name on the box. What happens on impact comes down to how the bullet is built, what it weighs and the velocity it still carries when it arrives. The rest is argument.

It's the oldest argument in camp, and mostly noise. Give two hunters the same cartridge and they can get completely different results. They aren't really shooting the same thing.

Work through the choice in this order.

1. Name the animal and the honest distance you expect to shoot at.
2. Pick the bullet first: construction, then weight.
3. Pick a rifle you will genuinely practise with. Recoil you flinch at costs more than it buys.
4. Sight in with that exact load, then find your honest effective range.
5. Read your province's equipment requirements before you buy ammunition. They are the ceiling.

Cartridge groups by the size of the animal

Cartridges fall into rough bands by the mass and bone structure of the animal they suit. Light cartridges suit small game and varmints, the middle band covers deer-sized animals, and the heavier end is for moose, elk and large bear. Treat these as groupings to think with. They aren't a shopping list, and the edges overlap heavily.

Look at that last column. Each step up costs you something. Almost always, you pay in practice time and shooter comfort, not in ballistics.

What actually decides whether a cartridge works on game

Three things decide it: how the bullet is built, how much it weighs, and how fast it is still travelling when it hits. Think of the cartridge as the container. It's the bullet that does the work, and SAAMI defines it as "A non-spherical projectile for use in a rifled barrel".

Construction comes first, since it governs what the bullet does after impact. Take a thin-jacketed bullet built to open fast. On a light-boned animal it's doing its job; on a heavy one it comes apart. A bonded or thick-jacketed bullet holds its weight, keeps a straight line and gets to the far lung.

Then weight. At the same diameter, a heavier bullet carries more momentum into bone and sheds velocity more slowly downrange.

Velocity is third. It's also the one people misread most. SAAMI defines velocity as "The speed of a projectile at a given point along its trajectory", and that phrase does a lot of work.

The box gives you muzzle velocity. What counts is the speed at the animal, and that might be several hundred metres per second lower. Bullets are designed to open within a velocity window. One that arrives too slow never expands, while one going too fast tears itself apart on the near side.

Why a bullet that holds together beats raw energy

Energy is a calculated figure from bullet weight and velocity. It tells you the potential a bullet arrives with. It doesn't tell you what the bullet does inside an animal. On heavy game, what ends things is penetration through bone and muscle to the vitals, and only a bullet that stays in one piece delivers that.

Picture one energy figure spent two different ways. The first bullet fragments on the shoulder. It dumps everything in the first few centimetres and leaves a spectacular surface wound on a live animal. The second holds 80 percent of its weight, drives through the shoulder, opens both lungs and exits.

Same number on paper. Opposite result in the field. It's why experienced hunters talk about bullets rather than muzzle energy, and why shot placement outranks both.

Why the same cartridge behaves differently with different bullets

A cartridge name describes a case and a chamber, not a projectile. A single chambering gets loaded with a wide range of bullet weights and constructions, and they perform nothing alike. Two boxes can carry the same words and be built for entirely different animals.

This has practical consequences. Put a light, fast varmint bullet and a heavy, tough hunting bullet in the same chambering, and they print in different places on the target. Their drop at range differs. So does what they do on impact.

That makes the load part of the choice rather than a detail. Choose the bullet for the animal, then confirm where that exact load shoots from your rifle. Is the difference between cartridge families still fuzzy? Our rimfire versus centrefire guide covers how the two are built.

How much recoil is too much?

Recoil is the rearward push of the firearm when a cartridge is fired. Too much of it is whatever amount makes you flinch. Where that line sits is personal, and toughness has nothing to do with it. It's the commonest reason people shoot worse with a heavier rifle.

A flinch is an involuntary clench just before the shot breaks. The muzzle moves at the one moment nothing can correct it, and the shooter almost never feels it happen. At ordinary hunting range a flinch opens a group up by a hand's width, and no ballistic advantage on paper survives that. The cure is trigger control and dry fire, and our marksmanship fundamentals guide works through both.

Match the cartridge to a rifle you'll genuinely practise with. One that punishes you off the bench gets shot twice a year and carried the rest of the time. A pleasant one comes out in the spring and over the summer, and gets fired from field positions, not only from a sandbag. Over a season that's worth more than any step up in cartridge.

Why sighting in matters more than the cartridge argument

Sighting in is confirming where your rifle places its bullets at a known distance with the exact ammunition you will hunt with. Until it's done, your cartridge choice is theory. You don't know where the rifle points.

Sight in before every season and after any change of load. Do it again any time the rifle takes a knock or the scope comes off. Then work out your honest effective range: the distance at which you keep every shot inside the vital area from a field position, in wind, with your heart rate up. It's usually much shorter than the number people quote. And it's the shooter who sets it, not the cartridge. Quebec's provincial hunting guidance makes the same point: "We recommend that you practise shooting before going hunting, so that you are familiar with your weapon, its capabilities and its limitations."

Where shotgun slugs and buckshot fit

A slug is a single large projectile fired from a shotgun. Buckshot is a load of several large pellets. Both are close-cover alternatives to a rifle cartridge. They give up range for a heavy payload at short distance, which suits thick bush and tight sightlines.

Of the two, the slug is closer to a rifle bullet. It's one projectile with a lot of frontal area and modest velocity, on a trajectory that falls away quickly past its useful range. Rifled barrels and sabot slugs stretch that distance. A smoothbore with a rifled slug doesn't stretch it far at all.

Buckshot is another discipline entirely. The pattern opens up with distance, and the only way to find the useful limit is to pattern your own gun with your own load. Neither one is a long-range answer. Pretending otherwise is how animals get wounded.

Do the rules say which cartridge you may use?

Provinces and territories publish their own equipment requirements for hunting, and those requirements are binding whatever a ballistics table says. Here is how Quebec's guidance puts it: "You may use different weapons, depending on the species you wish to hunt. However, you must comply with certain rules concerning the weapon's calibre or component parts."

None of those requirements are reproduced here. They differ by jurisdiction and by species, and they change. Before you buy ammunition, read the current regulations published for your own province or territory, and treat that document as the ceiling your choice has to fit inside. Everything on this page sits below it.

Once you know what fits, our ammo price comparison shows what each cartridge costs per round at Canadian retailers, cheapest first.

Questions about choosing a hunting cartridge

What matters more, bullet weight or muzzle energy?

Construction matters more than either. After that comes weight, then the velocity the bullet is still carrying when it arrives. The energy printed on a box is calculated at the muzzle, and it tells you nothing about how the bullet behaves inside an animal. A bullet that holds together and drives deep outperforms a faster one that comes apart on the shoulder.

Can one cartridge cover everything from deer to moose?

It stretches further than people assume. Plenty of middle-weight cartridges are loaded both with bullets light enough for deer and with heavier, tougher bullets for larger animals. The bullet changes. The headstamp does not. Load your rifle for the animal in front of you, and confirm the point of impact with that load.

Is a harder-recoiling rifle more effective?

Only if you can shoot it without flinching, and most people cannot. A flinch moves the rifle at the instant the shot breaks. That costs far more accuracy than any ballistic gain is worth, so a moderate cartridge you shoot calmly beats a heavy one you brace against.

How often should a hunting rifle be sighted in?

Before every season. Do it again after any change of load, and whenever the rifle is knocked, dropped or has its scope remounted. Sighting in means confirming where the rifle puts the bullet at a known distance with the exact ammunition you will hunt with. It is also the step most often skipped.

When would you use slugs or buckshot instead of a rifle?

Think close cover and short shots, in areas where a shotgun suits the terrain and the ranges involved. A slug is a single projectile with a heavy frontal area and a short useful range. Buckshot throws several large pellets that spread quickly. With either one, range discipline has to be honest.