Can You Hunt Deer With a .22? State Rules and Why Most Say No

Every fall someone asks it at the counter, usually with a hopeful look: "Can I just use my .22 for deer?" The question is reasonable. The .22 LR is accurate, quiet and cheap to shoot, and many people own one long before they own a deer rifle. But the legal and practical answer is almost always the same.

This is a neutral explainer of how deer regulations typically treat rimfire cartridges. It is general information, not legal advice. We quote specific rules only where we read the official text for this article; for everything else, the answer is in your state's current regulations.

How deer rules typically handle rimfires

State wildlife agencies regulate the "legal means and methods" for taking each species. For deer, those rules generally take one or more of these forms:

• A direct rimfire ban for deer. The rule names rimfire cartridges and prohibits them for deer, and sometimes for other big game.
• Minimum caliber rules. The rule sets a minimum bullet diameter for deer rifles. Some minimums would technically be met by a .22-caliber bullet, which is why caliber alone is not the whole story; these states often pair it with a centerfire requirement.
• Centerfire-only requirements. The rule allows rifles for deer only if they are centerfire.
• Energy or cartridge-type rules. Some jurisdictions set a minimum muzzle energy or limit deer hunting to particular cartridge types, such as straight-walled cartridges in certain zones.
• Bullet construction rules. Many states require expanding bullets for deer and prohibit full metal jacket ammunition.

The result is that rimfire cartridges, including the magnum rimfires, are excluded for deer in most places. Where a rule seems unclear, do not assume it is a loophole. Ask the agency directly.

One verified example: Florida

For a concrete illustration, Florida's administrative code rule on general methods of taking game, Rule 68A-12.002, says in plain terms:

"Firearms using any rimfire cartridge are prohibited for taking deer or bear."

The same subsection also prohibits non-expanding, full metal case (military ball) ammunition for deer or bear. We read this text in the version published by Cornell Law School's Legal Information Institute, which notes that version as effective until July 1, 2025. Rules are renumbered and amended over time, so check the Florida Fish and Wildlife Conservation Commission's current regulations before you rely on it.

Florida is not unusual. It is simply one place where the wording leaves no room for doubt. Your state's rule may be phrased differently, but the outcome for a .22 is very often the same.

Why the rules say no: energy and ethics

The rules are not arbitrary. They exist because deer are large animals, and a humane kill requires a bullet that reliably reaches and damages vital organs.

Look at the energy involved. Published figures for a typical high-velocity .22 LR bullet put muzzle energy in the low hundreds of foot-pounds at most: Ammunition Depot's listing for Winchester's 36-grain copper-plated hollow point gives 131 ft-lb at the muzzle. A 20-grain .17 HMR is around 250 ft-lb, and even the faster .17 WSM is listed at about 400 ft-lb with a 20-grain bullet. All of those numbers fall off quickly with distance.

Rimfire bullets are also light and, in the case of the .17s, built to fragment on small animals. That is the right design for a ground squirrel and the wrong one for a deer. The risk is not that a rimfire "cannot kill" a deer under perfect conditions. The risk is a wounded animal that runs off and dies slowly, which is exactly what hunting regulations and hunting ethics are trying to prevent.

What about .22 WMR and .17 HMR?

The magnum rimfires are faster and hit harder than .22 LR, which makes them excellent varmint and small-game cartridges. They are still rimfires. Where a state bans rimfire cartridges for deer, they are covered by the ban. Where a state sets minimum energy or centerfire requirements, they typically fall short.

That does not make them less useful in their own lane. For small game and varmints, a .22 WMR or .17 HMR can be a great choice; our .17 HMR vs .22 WMR comparison covers which suits which job, and our best .22 WMR ammo guide lists loads by use.

Special cases people ask about

Finishing a downed or wounded deer

Some states have specific rules on dispatching a legally taken, wounded deer, or on dispatching deer injured in vehicle collisions, sometimes involving law enforcement or a permit. These rules vary widely. Do not assume a .22 is allowed for this; check your state's regulations or call the wildlife agency.

Private land, crop damage and nuisance permits

Landowner and depredation permits come with their own conditions, often including specific firearm and ammunition requirements. Read the permit conditions in full.

Other countries

Outside the United States, rules differ again. Many countries set minimum caliber and energy standards for deer that exclude rimfires. Check the national and regional rules where you plan to hunt.

How to check your state's rule

1. Go to your state wildlife agency's website, not a forum or a social media post.
2. Find the current hunting regulations digest for the season you plan to hunt, and look for the section on legal methods, legal firearms or legal equipment for deer.
3. Read the rule for your specific zone and season. Archery, muzzleloader, youth and general firearm seasons can have different rules.
4. If the wording is unclear, call or email the agency and keep a note of the answer.
5. Recheck every year. Regulations change, and the digest you used last season may be out of date.

Use the .22 for what it does well

The .22 LR is one of the best small-game and training cartridges ever made. It is how many hunters learn shot placement, trigger control and stalking before they ever pick up a deer rifle. Practicing with a .22 is a great way to get ready for deer season; it just should not be the rifle you carry on opening day.

For squirrels and rabbits, a high-velocity hollow point like CCI Mini-Mag 36-grain hollow point is a common choice within sensible ranges. For varmints with a magnum rimfire, loads such as Federal Game-Shok .22 WMR 50-grain JHP or CCI Gamepoint .22 Mag 40-grain JSP are designed for that work. Check your state's small-game rules too; they often have their own requirements. Our small-game hunting guide covers ranges, shot placement and ethics.

The bottom line

In most places, you cannot legally hunt deer with a .22 LR, .22 WMR or .17 HMR, and Florida's rule shows how directly some states say it. Even where the wording is less explicit, the energy and bullet design of rimfire cartridges make them a poor ethical choice for deer. Read your state's current regulations, ask the agency if in doubt, and save the rimfire for the small game it was built for.

Editorial note: This is an independent editorial overview built from manufacturer information, retailer listings and published reporting. We have not performed hands-on testing of the products discussed, and nothing here is a performance guarantee. Verify specifications, compatibility and legality for your own situation.

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