Short answer: it depends on the province. In Ontario, Alberta, BC, Saskatchewan, Manitoba and New Brunswick a .223 is legal for deer. In Quebec, Nova Scotia and Newfoundland it is not. Here is the province-by-province rule on whether .223 is legal for deer hunting, what it is based on, and what to shoot if your province says no.
Regulations get reprinted every season and the wording matters, so treat this as the starting point and check the current summary for your province before you go out. Ontario also layers WMU and municipal rules on top of the provincial one.
.223 legal for deer hunting, province by province
| Province | .223 for deer | The rule |
|---|---|---|
| Ontario | Legal | Any centre-fire rifle. No minimum calibre. Some southern WMUs are shotgun or muzzleloader only, and some municipalities restrict rifles. |
| Alberta | Legal since May 30, 2025 | Centre-fire with a bullet of .22 calibre or larger. Non-expanding bullets prohibited. |
| British Columbia | Legal | Any centre-fire. Rimfire prohibited for big game. Bison has its own bullet and energy rule. |
| Saskatchewan | Legal | Case must be 32 mm or longer and not on the banned cartridge list (.22 Hornet, .30 Carbine, .357 Mag and others). The province still recommends larger than .23 for elk, moose and bear. |
| Manitoba | Legal, not recommended | Any centre-fire. The guide says .23 calibre or less is not recommended for big game. Full metal jacket ammo cannot be used or carried by a big game hunter. |
| Quebec | Not legal | Big game needs a centre-fire rifle of 6 mm (.243) or larger. |
| New Brunswick | Legal | Centre-fire rifle of any calibre. Rimfire prohibited for deer, bear and moose. Hunters aged 16 and 17 need an adult with them to use anything .23 or larger. |
| Nova Scotia | Not legal | Big game needs a rifle of .23 calibre or greater. The .223 (.224 bullet) is under that line. Smaller rifles are allowed for coyote under separate rules. |
| Newfoundland and Labrador | Not legal | No deer season anyway. Moose, caribou and bear need larger than .22 calibre, a 100 grain bullet and 1,500 ft-lb at the muzzle. .223 is named as .22 calibre. Exception: Labrador caribou with a .22 centre-fire making 1,500 ft-lb. |
| PEI | No big game hunting | There is no deer season on the Island. |
| Yukon and NWT | Not legal | 6 mm (.243) minimum for big game. Yukon also bans full metal jacket. |
| Nunavut | Legal | .22 centre-fire allowed if the empty case is at least 38 mm. The .223 case is 45 mm. |
Checked against the provincial regulation summaries in September 2026. Rules change; the current summary for your province wins.
Ontario, in more detail
Ontario’s rule for deer is “centre-fire rifle only” with no calibre floor, so a .223 is legal provincially. The catches:
- A lot of southern WMUs only allow shotguns, muzzleloaders or bows for deer. Check your unit in the deer season tables.
- Municipal discharge by-laws can restrict rifles even where the province allows them.
- If you are hunting small game during an open deer, moose, elk or bear season, you cannot carry a centre-fire rifle unless you also hold a licence for that big game. Coyote and wolf hunters with a small game licence are exempt, which is why the .223 is so popular for coyotes here.
- Semi-autos are fine for hunting in Ontario. Only restricted and prohibited firearms are barred.
Alberta changed in 2025
Alberta used to require .23 calibre or larger for big game, which kept .223 and .22-250 rifles out of the deer woods. On May 30, 2025 that dropped to .22 calibre centre-fire, so a .223 has been legal for deer, elk and moose in Alberta for a full season now. Non-expanding bullets are still prohibited, so no FMJ.
Legal is not the same as a good idea
A .223 kills deer cleanly when three things line up: a bullet built for it, a sensible range, and a broadside shot. Miss any one of them and you are tracking a wounded animal.
- Bullet: 62 to 77 grain bonded or controlled-expansion loads. Not 55 grain varmint bullets, and never FMJ, which is illegal for big game in several provinces anyway.
- Range: inside 150 yards. The .223 runs out of energy fast with hunting bullets.
- Shot: heart and lungs, broadside or slightly quartering. No shoulder shots, no Texas heart shots.
If most of your deer are shot at 60 yards from a stand, a .223 will do it all day. If you hunt cutlines and fields where 250 yards is normal, buy a .308.
Rifles that fit
For a non-restricted .223 that works for both coyotes and deer where legal:
- Akdas Alcor .223 semi-auto, $1,399.99. Iron sights and a rail, 7 lb, takes AR mags pinned to 5. The 1:7 twist stabilizes the heavy hunting bullets a deer load needs. Currently bundled with 200 rounds.
- CZ 600 American .223, $1,048.88. Bolt action, walnut, threaded, adjustable trigger.
- Weatherby Vanguard .223 with scope package, $1,378.88. Ready to zero out of the box.
- Tikka T3x Varmint .223, $1,650. Heavy stainless barrel for the person who mostly shoots coyotes at distance.
Everything .223 we have is in the .223 Remington category, ammo included. Practice with the cheap FMJ, then buy one box of real hunting ammo and re-zero with it before the season.
If your province says no
Quebec, Nova Scotia and Newfoundland hunters need to step up in calibre. The two we would point you at:
- SKS in 7.62×39, from $798.88. A .31 calibre bullet, and it clears every provincial minimum for deer. Use 123 grain soft points.
- Adler AD500 in .308, from $918.88. A semi-auto with real reach that is legal for deer and moose everywhere.
Common questions
Is .223 legal for deer in Ontario?
Yes, provincially. Check your WMU, since many southern units are shotgun-only for deer.
Can you hunt deer with a .223 in Alberta?
Yes, since May 30, 2025, with expanding bullets.
Is .223 legal for deer in BC?
Yes. BC only requires a centre-fire rifle for big game.
Is .223 legal for deer in Quebec?
No. Quebec requires 6 mm (.243) or larger for big game.
Is .223 legal for deer in Nova Scotia?
No. Nova Scotia requires .23 calibre or larger for deer. It is still a legal coyote rifle there.
Is 5.56 different from .223 for these rules?
No. The rules are about bullet diameter or cartridge size, and 5.56 and .223 are the same on both counts. Where .223 is legal for deer hunting, so is 5.56.