.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 →
Natchez Shooting and Outdoors
Norma EcoStrike Rifle Ammunition .300 Win Mag 165gr PT 3248 fps 20/ct$59.49
$2.97/rd · 20 rds
Shipping calculated in cart
Natchez Shooting and Outdoors
Federal Barnes TSX Rifle Ammunition .300 Win Mag 165gr 3050 fps 20/ct$59.99
$3.00/rd · 20 rds
Shipping calculated in cart
Natchez Shooting and Outdoors · 8 offers
Federal Terminal Ascent Rifle Ammunition .300 Win Mag 200 gr 2810 fps 20/ct$59.99
$3.00/rd · 20 rds
Shipping calculated in cart
MidwayUSA
Federal Premium 300 Winchester Magnum Ammo 185 Grain Berger Hybrid Hunter Jacketed Hollow Point Case of 200 (10 Boxes of 20)$609.99
$3.05/rd · 200 rds
Free shipping over $100
MidwayUSA · 4 offers
Browning Max Point 300 Winchester Magnum Ammo 180 Grain Polymer Tip Box of 20$62.99
$3.15/rd · 20 rds
$70.99 shipped · $8 shipping, free over $100
BattleHawk Armory
HSM BERGER 300WIN 205GR ELITE HUNTER 20/20$63.51
$3.18/rd · 20 rds
Shipping calculated in cart
MidwayUSA · 2 offers
HSM Low Recoil 300 Winchester Magnum Ammo 150 Grain Polymer Tip Box of 20$64.99
$3.25/rd · 20 rds
$72.99 shipped · $8 shipping, free over $100
Palmetto State Armory · 3 offers
Federal Trophy .300 Win Mag 180 gr Copper 20rds$64.99
$3.25/rd · 20 rds
Shipping calculated in cart
MidwayUSA
Federal Premium 300 Winchester Magnum Ammo 200 Grain Hornady ELD-X Polymer Tip Case of 200 (10 Boxes of 20)$659.99
$3.30/rd · 200 rds
Free shipping over $100
MidwayUSA
Federal Premium 300 Winchester Magnum Ammo 180 Grain Barnes Triple-Shock X Solid Hollow Point Lead Free Case of 200 (10 Boxes of 20)$669.99
$3.35/rd · 200 rds
Free shipping over $100
MidwayUSA · 2 offers
Black Hills 300 Winchester Magnum Ammo 190 Grain Open Tip Match Box of 20$67.49
$3.37/rd · 20 rds
$75.49 shipped · $8 shipping, free over $100
MidwayUSA · 4 offers
Atomic 300 Winchester Magnum Ammo 220 Grain Jacketed Hollow Point Box of 20$67.99
$3.40/rd · 20 rds
$75.99 shipped · $8 shipping, free over $100
Natchez Shooting and Outdoors · 6 offers
Winchester Expedition Big Game Long Range Rifle Ammunition .300 Win Mag Expedition 190gr. AB 2900 fps 20/ct$69.99
$3.50/rd · 20 rds
Shipping calculated in cart
MidwayUSA · 7 offers
Nosler RMEF E-Tip 300 Winchester Magnum Ammo 180 Grain Expansion Tip (E-Tip) Polymer Tip Lead Free Box of 20$72.44
$3.62/rd · 20 rds
$80.44 shipped · $8 shipping, free over $100
Natchez Shooting and Outdoors
Sig-Sauer Sig Sauer Platinum Hunter Accubond Rifle Ammunition .300 Win Mag 180gr PT 3000 fps 20/ct$72.99
$3.65/rd · 20 rds
Shipping calculated in cart
Natchez Shooting and Outdoors · 6 offers
Nosler RDF Match Grade Rifle Ammunition .300 Win Mag 210 gr OTM 2750 fps 20/ct$77.99
$3.90/rd · 20 rds
Shipping calculated in cart
Natchez Shooting and Outdoors
Swift Scirocco II Rifle Ammunition .300 Win Mag 180 gr BT 2919 fps 20/ct$86.49
$4.32/rd · 20 rds
Shipping calculated in cart
MidwayUSA · 2 offers
Black Hills Gold 300 Winchester Magnum Ammo 180 Grain Barnes Triple-Shock X Solid Hollow Point Lead Free Box of 20$86.99
$4.35/rd · 20 rds
$94.99 shipped · $8 shipping, free over $100
MidwayUSA
Choice 300 Winchester Magnum Ammo 185 Grain Berger Hunting VLD (Very Low Drag) Jacketed Hollow Point Box of 20$86.99
$4.35/rd · 20 rds
$94.99 shipped · $8 shipping, free over $100
Natchez Shooting and Outdoors · 12 offers
Nosler Accubond Long Range Trophy Grade Rifle Ammunition 300 Win Mag 190 gr PT 2870 fps 20/ct$87.99
$4.40/rd · 20 rds
Shipping calculated in cart
Natchez Shooting and Outdoors · 12 offers
Nosler Accubond Trophy Grade Rifle Ammunition .300 Win Mag 180 gr PT 2950 fps 20/ct$88.49
$4.42/rd · 20 rds
Shipping calculated in cart
Sportsmans Warehouse
Nosler Western Big Game 300 Winchester Magnum 180gr Partition Bullet Rifle Ammo - 20 Rounds$89.99
$4.50/rd · 20 rds
Shipping calculated in cart
MidwayUSA
Choice 300 Winchester Magnum Ammo 180 Grain Barnes Tipped Triple-Shock X Polymer Tip Lead Free Box of 20$89.99
$4.50/rd · 20 rds
$97.99 shipped · $8 shipping, free over $100
MidwayUSA · 3 offers
Lapua Scenar 300 Winchester Magnum Ammo 185 Grain Open Tip Match Box of 10$45.05
$4.51/rd · 10 rds
$53.05 shipped · $8 shipping, free over $100
.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.