.300 Win Mag Ammo Prices & Cost Per Round
1,096 listings tracked · 853 in stock, across 14 retailers. Retailer feeds are checked every 15 minutes.
85¢/rd
Lowest cost per round →
$2.75/rd
Median cost per round across in-stock listings
$16.99
Cheapest Box →
Target Sports USA
Hornady Superformance GMX 300 Winchester Magnum Ammo 165 Grain CX Copper Solid - 820264$43.05
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Target Sports USA
Prvi Partizan 300 Winchester Magnum Ammo 145 Grain Full Metal Jacket Boat Tail - PPU3WM$23.00
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Target Sports USA
Remington Long Range 300 Winchester Magnum Ammo 190 Grain Speer Impact - RLR300W$51.99
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Target Sports USA
Hornady Outfitter 300 Winchester Magnum Ammo 180 Grain Copper Alloy Expanding Lead Free - 821974$42.48
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Target Sports USA
Remington Core Lokt 300 Winchester Magnum Ammo 180 Grain Core-Lokt Tipped - RT300WC$41.38
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Target Sports USA
Norma Bondstrike 300 Winchester Ultra Magnum Ammo 180 Grain Bonded Polymer Tip Boat Tail - 20176102$59.99
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Target Sports USA
Winchester Supreme Long Range 300 Winchester Magnum Ammo 195 Grain Polymer Tip - S300BC$42.50
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Target Sports USA
Browning Long Range Pro 300 Winchester Magnum Ammo 195 Grain Sierra MatchKing BTPT$29.99
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Target Sports USA
Winchester Ballistic Silvertip 300 Winchester Magnum Ammo 180 Grain Polymer Tip$54.99
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Target Sports USA
Prvi Partizan Thunder 300 Winchester Magnum Ammo 170 Grain Pointed Soft Point - PP3.63$22.99
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Target Sports USA
Fiocchi Field Dynamics 300 Winchester Magnum Ammo Pointed Soft Point - 300WMB$36.99
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Target Sports USA
Federal Premium 300 Winchester Magnum Ammo 165 Grain Bonded Solid Copper -P300WCX1$44.61
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Target Sports USA
Federal Fusion 300 Winchester Magnum Ammo 180 Grain Fusion Soft Point - F300WFS3$42.99
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Target Sports USA
Federal Premium Berger TSX 300 Winchester Magnum Ammo 185 Grain Berger Hybrid Hunter - P300WBCH1$47.28
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Target Sports USA
Federal Premium 300 Winchester Magnum Ammo 200 Grain ELD-X - P300WELDX1$50.73
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Target Sports USA
Remington Premier CuT 300 Winchester Magnum Ammo 180 Grain Copper Tipped - R22345$45.99
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Target Sports USA
Hornady Hornady 300 Winchester Magnum Ammo 178 Grain Extremely Low Drag Match - 82043$49.45
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Target Sports USA
Black Hills Gold 300WinchesterMagnum Ammo 180Grain Barnes TripleShockX - 1C300WMBHGN1$57.90
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Target Sports USA
Federal Premium Terminal Ascent 300 Winchester Magnum Ammo 175 Grain Terminal Ascent - P300WTA2$52.01
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Target Sports USA
Winchester Deer Season 300 Win Magnum Ammo 150 Grain Extreme Point - X300DS$46.99
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Target Sports USA
Browning Silver Series 300 Winchester Magnum Ammo 180 Grain Plated Soft Point - B192603001$32.99
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Target Sports USA
Federal Power-Shock 300 Winchester Magnum Ammo 180 Grain Soft Point - 300WBS$33.26
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Target Sports USA
Prvi Partizan 300 Winchester Magnum Ammo 165 Grain Pointed Soft Point Boat Tail - PP3002$32.50
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Target Sports USA
Lapua 300 Win Mag Ammo 185 Grain Open Tip Match - 4317308$41.50
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.300 Win Mag Cost Per Round History
.300 Win Mag Price by Month
| Month | Median cost per round | Lowest cost per round | Change |
|---|---|---|---|
| November 2026 | $2.72/rd | 75¢/rd | +3.9% |
| October 2026 | $2.62/rd | 75¢/rd | — |
| September 2026 | $2.62/rd | $1.15/rd | -0.8% |
| August 2026 | $2.64/rd | $1.07/rd | +1.7% |
| July 2026 | $2.60/rd | $1.07/rd | +1.6% |
| June 2026 | $2.56/rd | $1.07/rd | -1.6% |
| May 2026 | $2.60/rd | $1.15/rd | -5.5% |
| April 2026 | $2.75/rd | $1.50/rd | — |
Median and lowest observed cost per round per calendar month, from in-stock listings tracked across supported retailers.
Want the whole market instead of one caliber? The Ammo Price Index chains these monthly medians across a fixed 12-caliber basket into a single month-over-month benchmark.
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Frequently Asked Questions
What is a good cost per round for .300 Win Mag?
The best cost per round we're currently tracking for .300 Win Mag is $0.85/round. A typical CPR across 591 tracked offers is $2.75/round. Prices vary by brand, grain weight, and retailer.
Is .300 Win Mag ammo cheap right now?
The typical cost per round for .300 Win Mag is $2.75. Check our CPR trend chart above to see if current prices are above or below the 30-day average. Set a price alert to get notified when prices drop.
Where can I find the cheapest .300 Win Mag ammo?
Based on our tracking across 14 retailers, the cheapest .300 Win Mag ammo starting at $16.99/box. We compare prices from Ammunition Depot, BattleHawk Armory, Brownells, E-Commerce Arms and more.
Other Calibers
.17 HMR
.22 LR
.22 WMR
.243 Win
.270 Win
.300 Win Mag
.308 Winchester
.338 Lapua
.350 Legend
.357 Magnum
.38 Special
.380 ACP
.40 S&W
.410 Bore
.44 Magnum
.45
10mm
12 Gauge
20 Gauge
28 Gauge
30-06
300 Blackout
5.56 / .223
5.7x28mm
6.5 Grendel
6.5mm Creedmoor (6.5x48mm)
7.62x39
7.62x51 NATO
7mm Rem Mag
9mm
Compare .300 Win Mag ammo by cost per round. Open any product to see its full price history or set a price alert.