Unit A311 (Lower Gallatin-Madison-Horseshoe Hills)

Montana Hunting Guide — Antelope

Unit A311 lies in Madison, Park, Gallatin, Jefferson and Broadwater counties. Montana FWP publishes no per-unit pronghorn success figure we can verify for this unit. Check land status on a current map before you plan a route.

View Draw Odds Montana Hunting Guide

Build your own PDF hunt guide for Unit A311

Answer a few questions about your tag, your season and your rig, and the Field Intelligence Report builds a print-ready Montana Unit A311 guide around your hunt: three ranked spots with morning, afternoon and evening plays, a day-by-day plan, topo maps with every pin numbered, a camp and access plan, the legal and retrieval rules for this unit, shot discipline, a meat-care and pack-out plan, and a pre-trip checklist. Every coordinate sits on land recorded as public.

Antelope guide

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Antelope Hunting in Unit A311

Where to Find Pronghorn in Unit A311

Montana FWP's material on unit A311 stops at the boundary — there is no agency account of where its pronghorn live. The country below is verified; where to begin in it is our judgement, not the agency's. The unit lies in Madison, Park, Gallatin, Jefferson and Broadwater counties.

The lines of the unit: Sixteenmile Creek, Middle Fork and Bridger Mountain Divide

Montana FWP draws unit A311 in Madison, Park, Gallatin, Jefferson and Broadwater counties with a boundary that runs on Interstate 90, Highway 64, US Highway 287 and Route 359, and on Sixteenmile Creek, Middle Fork, Bridger Mountain Divide and Flathead Pass, walked corner by corner in its hunting district legal descriptions. That is a legal description, not a habitat map. What it does give you is the way in: the rivers and highways you cross, and the divides that decide which drainage you end up in.

High ground inside the line: Gallatin Peak, Spanish Peaks and Wilson Peak

Named high points inside the unit include Gallatin Peak at 10,975 feet, Spanish Peaks at 10,975 feet, Wilson Peak at 10,669 feet, Hollowtop Mountain at 10,599 feet and Mount Jefferson at 10,483 feet. Several carry a public-land flag in our data, which makes them the first places to try for a view. Pronghorn stay on the open rolling ground and leave the timber alone.

Holding ground: Flathead Pass, Bridger Bowl and Ellison Flat

Below them sit Flathead Pass at 6,868 feet, Bridger Bowl at 6,373 feet, Ellison Flat at 6,349 feet, Lang Canyon at 6,282 feet and Newell Basin at 6,178 feet. That is the low country of the unit — the ground animals drop into when they are pushed or when the weather turns. Pick the one with the least road on its upwind side.

Water: Huller Springs, Eastham Spring and Bullrock Spring

Named sources include Huller Springs, Eastham Spring, Bullrock Spring, Quarry Spring, Langohr Springs and Williams Spring. Nothing in the data says which of them run in autumn, so a scouting trip earns its fuel.

Unit A311 terrain and land status

Measured from the unit boundary, not from the agency write-up

Named features inside the unit

Glass from: Gallatin Peak (10,975 ft), Wilson Peak (10,669 ft), Hollowtop Mountain (10,599 ft), Jumbo Mountain (10,418 ft)

Holding ground: Bear Basin (9,007 ft), Ross Pass (7,591 ft), Tom Lay Prairie (6,933 ft), Huller Springs, Eastham Spring

Every one of these was tested against the unit polygon before it went on the map. They are starting points, not agency recommendations.

How to Hunt Pronghorn in Unit A311

Montana FWP publishes no pronghorn success figure for unit A311 that we can tie to this unit alone, so we won't quote one. The plan: spot from a vehicle or a rise at distance, then plan a stalk that uses the only cover there is — the curve of the ground.

Glassing from Hyalite Ridge, Hyalite Peak and Little Granite Peak

Take a position on one of Hyalite Ridge (10,312 ft), Hyalite Peak (10,291 ft), Little Granite Peak (10,240 ft) and Overlook Mountain (10,230 ft) and be on it before light. In the dark the air runs downhill. Pick an approach that doesn't send it into the country you want to see, and plan to move once the slope warms. A tripod is worth more here than another hour of walking. On the rut hunts, early-season bucks hold does and can be decoyed where the law allows it.

The way in: Interstate 90, Highway 64 and US Highway 287

We have no road inventory for this unit, so the only routes we can name are the ones Montana FWP draws the boundary with: Interstate 90, Highway 64, US Highway 287 and Route 359. Those are its edges, not its interior — useful because they are where you leave the pavement, and useless for telling you what the inside is like. Check each of them on a current motor-vehicle-use map before you count on it, because a line on a boundary description is not a promise of public access.

A first plan from the pins on this page

The map above marks Gallatin Peak, Wilson Peak, Hollowtop Mountain and Jumbo Mountain as places to see from, and Bear Basin, Ross Pass, Tom Lay Prairie and Huller Springs as ground to watch. Each pin is a named feature verified to fall inside the unit line, not a spot anyone has hunted. Join two of them into a morning: be on the first before light, move to the second once the thermals turn.

What we can't tell you

Some of the ground named above carries no land-status flag we trust, so check ownership on a current layer before you hunt it. We have no pronghorn success figure for this unit that survives checking against Montana FWP's own harvest and hunter counts, and we would rather say so than print a statewide average as though it were measured here.

Montana rules that decide your day

Summarised from FWP regulations. They change — read the current regulations and your permit-tag before you hunt.

Legal shooting hours

Big game may be taken from half an hour before sunrise to half an hour after sunset.

Motorized retrieval

Montana has no general off-road retrieval allowance; travel stays on open routes.

Tagging

Validate the tag and attach it to the carcass before moving the animal.

Leaving meat

Wasting game meat is illegal.

Where you may not shoot

Occupied structures — No discharging a firearm within 150 yards of an occupied dwelling without permission, and no shooting from or across a public road.

Antelope: where to put the shot

Broadside, straight up the front leg, a third of the way into the body. Pronghorn are shallow-chested and the lungs sit forward.

Shots to refuse

Range it, then range it again. Open country makes 400 yards look like 250.
Wait for the buck to stop. Nobody kills a running pronghorn cleanly on purpose.
Mind the backdrop. A miss carries a long way across a flat.

Plan the carry: roughly 30– 45 lb of boned-out meat, before head and hide — one large cooler with ice already in it. ProHunt planning estimate, not an agency figure.

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Antelope Success Rates

Montana FWP's 2023 harvest estimates carry no pronghorn row for unit A311 that we can read back to this unit on its own. Where the agency reports a unit inside a grouping, or prints a table our parser cannot resolve to a single column, we leave the number out rather than publish a statewide average as though it had been measured here. Montana FWP's current harvest estimates are the place to check before you apply.

Antelope Draw Odds

Draw odds data not available for this specific unit/species combination in our database.

Search Montana Draw Odds

Montana FWP's draw recap has no pronghorn record we can tie to unit A311. That usually means the licence is sold over the counter, is issued under a hunt code covering several units, or was not offered in the years we hold. Rather than estimate a point requirement, we leave it blank — check Montana FWP's own draw recap for the hunt code you mean to apply for.

Frequently Asked Questions

Where is Colorado unit A311?

Unit A311 lies in Madison, Park, Gallatin, Jefferson and Broadwater counties. Montana FWP draws unit A311 with a boundary that runs on Interstate 90, Highway 64, US Highway 287 and Route 359, and on Sixteenmile Creek, Middle Fork, Bridger Mountain Divide and Flathead Pass, walked corner by corner in its hunting district legal descriptions.

What is the pronghorn success rate in unit A311?

Montana FWP publishes no pronghorn success figure we can tie to unit A311 on its own — the 2023 harvest tables either omit the unit or report it in a grouping we could not read back to it reliably. Rather than quote a statewide average as though it were measured here, we say so. Check Montana FWP's current harvest estimates before you apply.

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Sources & Verification

Every fact on this page is tied to a primary source below. Last fact-checked 2026-10-24.

Montana FWP Hunting District Legal Descriptions, 2026/2027 — antelope hunting districts (pp. 5-9) — Montana Fish, Wildlife & Parks · supports: GMU boundary description, Counties the unit lies in · accessed 2026-10-24
FWP hunting district feature services — deer/elk, antelope, moose, bighorn sheep and mountain goat districts (2026 and 2027 seasons) — Montana Fish, Wildlife & Parks · supports: Mapped extent of the unit, Which named ground falls inside the unit line · accessed 2026-10-24