.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 →
E-Commerce Arms · 8 offers
HSM AMMUNITION 300 WIN MAG 165GR TIPPING PT 20RD BOX 20 BOXES PER CASE$42.63
$2.13/rd · 20 rds
Shipping calculated in cart
BattleHawk Armory · 12 offers
Remington Ammunition R300W1 Core-Lokt 300 Win Mag 150 gr Core-Lokt Pointed Soft Point (PSPCL) 20 Bx/ 10 Cs$42.97
$2.15/rd · 20 rds
Shipping calculated in cart
GrabAGun · 15 offers
Hornady Ammo SPF .300WM 165 Grain CX 20-PACK 20 Rounds$43.39
$2.17/rd · 20 rds
Shipping calculated in cart
BattleHawk Armory · 13 offers
Winchester Ammo X30WM2 Super-X 300 Win Mag 180 gr Power-Point (PP) 20 Bx/ 10 Cs$43.57
$2.18/rd · 20 rds
Shipping calculated in cart
Good 4 Guns · 6 offers
Nosler 300 Win Mag 180 Grain SB SP Rifle Ammo - 20 Rounds$43.99
$2.20/rd · 20 rds
Shipping calculated in cart
GrabAGun · 12 offers
Remington Core-Lokt Brass .300 Win Mag 180 Grain 20-Rounds CLT$44.69
$2.24/rd · 20 rds
Shipping calculated in cart
Natchez Shooting and Outdoors · 10 offers
Fiocchi Hyperformance Hunt Rifle Ammunition .300 Win Mag 180 gr SST 3000 fps 20/ct$44.99
$2.25/rd · 20 rds
Shipping calculated in cart
Brownells · 9 offers
WINCHESTER - DEER SEASON XP 300 WIN MAGNUM EXTREME POINT TIP RIFLE AMMO$44.99
$2.25/rd · 20 rds
Shipping calculated in cart
Natchez Shooting and Outdoors
Ammo-Inc Ammo Inc. Hunt LR Rifle Ammunition .300 Win Mag 180gr PT 3075 fps 20/ct$45.99
$2.30/rd · 20 rds
Shipping calculated in cart
BattleHawk Armory · 14 offers
Hornady Match Ammunition.300 Winchester Magnum, 178 Grain, ELD Match, 20 Rounds.$46.23
$2.31/rd · 20 rds
Shipping calculated in cart
E-Commerce Arms · 9 offers
FIOCCHI 300 WIN MAG 180GR - SCIROCCO 20RD 10BX/CS$46.36
$2.32/rd · 20 rds
Shipping calculated in cart
E-Commerce Arms · 9 offers
FIOCCHI 300 WIN MAG 190GR HPBT - 20RD 10BX/CS$46.41
$2.32/rd · 20 rds
Shipping calculated in cart
BattleHawk Armory · 13 offers
REM PREMIER CUT 300WIN 180GR COPPER 20/10$46.52
$2.33/rd · 20 rds
Shipping calculated in cart
BattleHawk Armory · 8 offers
Winchester Ammo X300DSLF Deer Season XP Copper Impact 300 Win Mag 150 gr Copper Extreme Point Rifle Ammunition 20rd Box$46.52
$2.33/rd · 20 rds
Shipping calculated in cart
Good 4 Guns · 10 offers
HSM .300 Win Mag 180 gr Sierra GameKing Ammo - 20 Rounds$46.99
$2.35/rd · 20 rds
Shipping calculated in cart
BattleHawk Armory · 11 offers
NOS AMMO 300WIN 165GR BT 20/10$47.31
$2.37/rd · 20 rds
Shipping calculated in cart
E-Commerce Arms · 10 offers
HSM 300 WIN MAG 200GR - GAME KING 20RD 20BX/CS$47.48
$2.37/rd · 20 rds
Shipping calculated in cart
E-Commerce Arms · 9 offers
Fort Scott Munitions 300WM-175-SCV2 Tumble Upon Impact (TUI) 300WM 175gr Solid Copper Spun 20 Per Box/10 Case$47.72
$2.39/rd · 20 rds
Shipping calculated in cart
Good 4 Guns · 9 offers
HSM 300 Win Mag 165gr Game King Ammo - 20 Rounds$47.99
$2.40/rd · 20 rds
Shipping calculated in cart
GrabAGun · 3 offers
SIG SAUER Venari .300 Winchester Magnum 20-Rounds 180 Grain SP$47.99
$2.40/rd · 20 rds
Shipping calculated in cart
Good 4 Guns · 14 offers
Hornady .300 Win Mag 195gr ELD Match Ammo - 20 Rounds$48.99
$2.45/rd · 20 rds
Shipping calculated in cart
MidwayUSA · 11 offers
Remington Core-Lokt Copper 300 Winchester Magnum Ammo 180 Grain Solid Hollow Point Lead Free Box of 20$49.33
$2.47/rd · 20 rds
$57.33 shipped · $8 shipping, free over $100
Natchez Shooting and Outdoors
Nosler Whitetail Country Rifle Ammunition .300 Win Mag 180gr SP 20/ct$49.49
$2.47/rd · 20 rds
Shipping calculated in cart
MidwayUSA
Remington Core-Lokt 300 Winchester Magnum Ammo 150 Grain Jacketed Soft Point Case of 200 (10 Boxes of 20)$499.99
$2.50/rd · 200 rds
Free shipping 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.