Montana Hunting Laws
Montana sets no minimum or maximum caliber for centerfire rifles or handguns used on deer and elk, and no magazine/round-capacity limit — a rare degree of freedom among Western states. The catch: air-powered guns aren't a legal big-game method at all, and the separate Muzzleloader Heritage season locks hunters into flintlock/percussion ignition, .45-caliber-minimum, no-scope loads.
Rules checked against Montana Fish, Wildlife & Parks regulations, August 30, 2026.
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Sourced Rules
Each rule links to the regulation we read and the month we checked it.
Rifle and Handgun
1 ruleMontana sets no minimum or maximum caliber for rifles or handguns used on deer/elk, and no magazine/round-capacity limit — even rimfire isn't separately excluded, unlike most states.
"There is no rifle or handgun caliber limitation or magazine/round capacity restrictions for the taking of game animals."
Laws & Rules — Firearms, p. 24 · verified Aug 2026
| Species | Rule | Citation | Checked |
|---|---|---|---|
|
White-tailed / Mule Deer
Elk
|
Montana sets no minimum or maximum caliber for rifles or handguns used on deer/elk, and no magazine/round-capacity limit — even rimfire isn't separately excluded, unlike most states.
"There is no rifle or handgun caliber limitation or magazine/round capacity restrictions for the taking of game animals." |
Laws & Rules — Firearms, p. 24 | Aug 2026 |
Shotgun
2 rulesTurkey shotguns may be no larger than 10 gauge.
"Wild turkey may be taken with: a shotgun not larger than a 10 gauge"
Turkey — Lawful Methods, MCA 87-6-401 · verified Aug 2026
Nontoxic shot is required for upland game bird (including turkey) hunting on federal refuges and waterfowl production areas.
"Hunters are reminded that nontoxic shot is required for the hunting of upland game birds on federal refuges or waterfowl production areas. Only federally-approved nontoxic shot may be used on these areas."
Nontoxic Shot · verified Aug 2026
| Species | Rule | Citation | Checked |
|---|---|---|---|
|
Wild Turkey
|
Turkey shotguns may be no larger than 10 gauge.
"Wild turkey may be taken with: a shotgun not larger than a 10 gauge" |
Turkey — Lawful Methods, MCA 87-6-401 | Aug 2026 |
|
All species
|
Nontoxic shot is required for upland game bird (including turkey) hunting on federal refuges and waterfowl production areas.
"Hunters are reminded that nontoxic shot is required for the hunting of upland game birds on federal refuges or waterfowl production areas. Only federally-approved nontoxic shot may be used on these areas." |
Nontoxic Shot | Aug 2026 |
Muzzleloader
4 rulesApplies to Montana's separate Muzzleloader Heritage season (and to muzzleloaders used in designated Weapons Restriction Areas). Muzzleloaders used during the regular general firearms season have no stated minimum caliber.
"The muzzleloading rifle must be a minimum of .45 caliber and may not have more than two barrels."
Muzzleloader Heritage Hunting Season Lawful Weapons, MCA 87-1-304(9) · verified Aug 2026
Heritage-season muzzleloaders must be true muzzle-loaded flintlock/wheel lock/matchlock/percussion guns — modern in-line, 209-primer, and breech-loading designs don't qualify.
"ignited by a flintlock, wheel lock, matchlock, or percussion mechanism using a percussion or musket cap ... a hunter may not use a muzzleloading rifle that requires insertion of a cap or primer into the open breech of..."
Muzzleloader Heritage Hunting Season Lawful Weapons, MCA 87-1-304(9); MCA 87-6-401(1) · verified Aug 2026
Scopes/optical magnification are banned during the Muzzleloader Heritage season — open or iron sights only.
"a hunter may not use a muzzleloading rife ... [that] is mounted with an optical magnification device"
Muzzleloader Heritage Hunting Season Lawful Weapons, MCA 87-1-304(9) · verified Aug 2026
Heritage-season muzzleloaders must fire plain lead projectiles loaded with loose black powder or pyrodex — no sabots, gas checks, or pre-packaged cartridges/pellets.
"Plain lead projectiles and a muzzleloading rifle that is charged with loose black powder, loose pyrodex, or an equivalent loose black powder substitute ... Use of prepared paper or metallic cartridges, sabots, gas che..."
Muzzleloader Heritage Hunting Season Lawful Weapons, MCA 87-1-304(9) · verified Aug 2026
| Species | Rule | Citation | Checked |
|---|---|---|---|
|
White-tailed / Mule Deer
Elk
|
Applies to Montana's separate Muzzleloader Heritage season (and to muzzleloaders used in designated Weapons Restriction Areas). Muzzleloaders used during the regular general firearms season have no stated minimum caliber.
"The muzzleloading rifle must be a minimum of .45 caliber and may not have more than two barrels." |
Muzzleloader Heritage Hunting Season Lawful Weapons, MCA 87-1-304(9) | Aug 2026 |
|
White-tailed / Mule Deer
Elk
|
Heritage-season muzzleloaders must be true muzzle-loaded flintlock/wheel lock/matchlock/percussion guns — modern in-line, 209-primer, and breech-loading designs don't qualify.
"ignited by a flintlock, wheel lock, matchlock, or percussion mechanism using a percussion or musket cap ... a hunter may not use a muzzleloading rifle that requires insertion of a cap or primer into the open breech of..." |
Muzzleloader Heritage Hunting Season Lawful Weapons, MCA 87-1-304(9); MCA 87-6-401(1) | Aug 2026 |
|
White-tailed / Mule Deer
Elk
|
Scopes/optical magnification are banned during the Muzzleloader Heritage season — open or iron sights only.
"a hunter may not use a muzzleloading rife ... [that] is mounted with an optical magnification device" |
Muzzleloader Heritage Hunting Season Lawful Weapons, MCA 87-1-304(9) | Aug 2026 |
|
White-tailed / Mule Deer
Elk
|
Heritage-season muzzleloaders must fire plain lead projectiles loaded with loose black powder or pyrodex — no sabots, gas checks, or pre-packaged cartridges/pellets.
"Plain lead projectiles and a muzzleloading rifle that is charged with loose black powder, loose pyrodex, or an equivalent loose black powder substitute ... Use of prepared paper or metallic cartridges, sabots, gas che..." |
Muzzleloader Heritage Hunting Season Lawful Weapons, MCA 87-1-304(9) | Aug 2026 |
Air Gun
2 rulesAir-powered guns aren't among the enumerated lawful methods for deer/elk, so airguns are not legal for big game in Montana (Montana does allow air rifles for turkey/upland birds — see the turkey rule).
"Firearms, including rifles, handguns, shotguns with 0, 00, or slugs, and muzzleloaders; archery equipment; and crossbows are lawful for taking game animals. All other methods of take are prohibited."
Laws & Rules — Firearms, p. 24 · verified Aug 2026
Air rifles are legal for turkey only in the fall season, and only at .177 cal/≥1250 fps or .22 cal/≥950 fps with a performance ballistic alloy pellet.
"fall turkey may be taken with an .177 caliber air rifle shooting a performance ballistic alloy pellet at least 1250 feet per second as specified by the manufacturer or with an .22 caliber air rifle shooting a performa..."
Turkey — Lawful Methods, MCA 87-6-401 · verified Aug 2026
| Species | Rule | Citation | Checked |
|---|---|---|---|
|
White-tailed / Mule Deer
Elk
|
Air-powered guns aren't among the enumerated lawful methods for deer/elk, so airguns are not legal for big game in Montana (Montana does allow air rifles for turkey/upland birds — see the turkey rule).
"Firearms, including rifles, handguns, shotguns with 0, 00, or slugs, and muzzleloaders; archery equipment; and crossbows are lawful for taking game animals. All other methods of take are prohibited." |
Laws & Rules — Firearms, p. 24 | Aug 2026 |
|
Wild Turkey
|
Air rifles are legal for turkey only in the fall season, and only at .177 cal/≥1250 fps or .22 cal/≥950 fps with a performance ballistic alloy pellet.
"fall turkey may be taken with an .177 caliber air rifle shooting a performance ballistic alloy pellet at least 1250 feet per second as specified by the manufacturer or with an .22 caliber air rifle shooting a performa..." |
Turkey — Lawful Methods, MCA 87-6-401 | Aug 2026 |
All Weapons
4 rulesUnlike many states, Montana explicitly permits illuminated-reticle, rangefinding, and red-dot scopes for big game — there's no optic ban to worry about for the general firearms season.
"Rifle scopes with illuminated reticles, built-in range finding capabilities, and "red dot" scopes are lawful for the taking of game animals."
Laws & Rules — Firearms, p. 24 · verified Aug 2026
Radios, cell phones, texting, and social media/apps can't be used to help locate or take game while you're actively hunting; safety-related use is exempt.
"The use of two-way electronic communication is prohibited: While in the act of hunting game animals or wolves to aid in the taking or locating of live animals."
ARM 12.6.1010 — Two-way Communication · verified Aug 2026
Firearm hunters (and their outfitter/guide) must wear at least 400 square inches of fluorescent hunter orange above the waist, visible at all times. A separate archery exception applies during archery-only season.
"Any person hunting or accompanying a hunter as an outfitter or guide must wear a minimum of 400 square inches of hunter orange (fluorescent) material above the waist, visible at all times"
MCA 87-6-414 — Hunter Orange Requirement · verified Aug 2026
Montana bans suppressors while hunting and then carves out one exception: a device registered with ATF. That makes registration the only way in, for every species and all land. The carve-out asks whether the device is registered, not whether you have complied with federal law, so a suppressor bought after ATF stopped requiring registration on 9 October 2026 does not literally meet it — and the Montana Attorney General said in writing on 27 August 2026 that Montana law still requires suppressors to be registered with ATF if used for hunting. File the free voluntary registration before you hunt with one. Getting this wrong costs $50 to $1,000 and up to six months, and the court may take your hunting privileges.
Suppressor law in 2026: what changed · suppressor prices
"A person may not: ... (c) while hunting, use any device or mechanism devised to silence, muffle, or minimize the report of any firearm, whether the device or mechanism is operated from or attached to any firearm. This..."
MCA 87-6-401(1)(c), penalty at 87-6-401(2) · verified Oct 2026
| Species | Rule | Citation | Checked |
|---|---|---|---|
|
White-tailed / Mule Deer
Elk
|
Unlike many states, Montana explicitly permits illuminated-reticle, rangefinding, and red-dot scopes for big game — there's no optic ban to worry about for the general firearms season.
"Rifle scopes with illuminated reticles, built-in range finding capabilities, and "red dot" scopes are lawful for the taking of game animals." |
Laws & Rules — Firearms, p. 24 | Aug 2026 |
|
All species
|
Radios, cell phones, texting, and social media/apps can't be used to help locate or take game while you're actively hunting; safety-related use is exempt.
"The use of two-way electronic communication is prohibited: While in the act of hunting game animals or wolves to aid in the taking or locating of live animals." |
ARM 12.6.1010 — Two-way Communication | Aug 2026 |
|
White-tailed / Mule Deer
Elk
|
Firearm hunters (and their outfitter/guide) must wear at least 400 square inches of fluorescent hunter orange above the waist, visible at all times. A separate archery exception applies during archery-only season.
"Any person hunting or accompanying a hunter as an outfitter or guide must wear a minimum of 400 square inches of hunter orange (fluorescent) material above the waist, visible at all times" |
MCA 87-6-414 — Hunter Orange Requirement | Aug 2026 |
|
All species
|
Montana bans suppressors while hunting and then carves out one exception: a device registered with ATF. That makes registration the only way in, for every species and all land. The carve-out asks whether the device is registered, not whether you have complied with federal law, so a suppressor bought after ATF stopped requiring registration on 9 October 2026 does not literally meet it — and the Montana Attorney General said in writing on 27 August 2026 that Montana law still requires suppressors to be registered with ATF if used for hunting. File the free voluntary registration before you hunt with one. Getting this wrong costs $50 to $1,000 and up to six months, and the court may take your hunting privileges.
Suppressor law in 2026: what changed · suppressor prices
"A person may not: ... (c) while hunting, use any device or mechanism devised to silence, muffle, or minimize the report of any firearm, whether the device or mechanism is operated from or attached to any firearm. This..." |
MCA 87-6-401(1)(c), penalty at 87-6-401(2) | Oct 2026 |
Federal Rules That Apply in Every State
These federal requirements apply in Montana on top of state law.
Sources
How to Use This Page
Each rule links to the regulation we read and the month we checked it. Rules marked needs review come from summaries rather than the regulation text, and never produce a green answer in the checker. The checker's energy figures are typical factory loads, so where a rule sets an energy or bullet-weight floor, check your own load's rating. This page covers equipment only, not seasons, tags or local ordinances, and it isn't legal advice. The current Montana Fish, Wildlife & Parks regulations are the final word.