.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 →
Palmetto State Armory
Nemo Arms .300WM 145gr FMJ Ammo 20rds - NA-RT-300WM-145FMJ-PPU$16.99
85¢/rd · 20 rds
Shipping calculated in cart
E-Commerce Arms · 4 offers
Wilson Combat 05308125CUSP3 300WinMag 125gr Controlled Chaos 50rdsSee price in cart
$1.16/rd · 50 rds
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Good 4 Guns · 15 offers
Aguila 300 Win Mag 180gr SP Rifle Ammunition - 20 Rounds$25.99
$1.30/rd · 20 rds
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True Shot Ammo
Sellier & Bellot - 300 Win Mag - 180 Grain - SPCE - 400$535.61
$1.34/rd · 400 rds
Shipping calculated in cart
Good 4 Guns · 4 offers
Sellier & Bellot .300 Win Mag 180GR SPCE Ammunition - 20 Rounds$26.99
$1.35/rd · 20 rds
Shipping calculated in cart
E-Commerce Arms · 11 offers
PPU Rifle Ammunition .300 Win Magnum 165 gr SPBT 3050 fps 20/ct$29.62
$1.48/rd · 20 rds
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E-Commerce Arms · 12 offers
PPU 300WIN MAG SP 150GR 20/200$29.62
$1.48/rd · 20 rds
Shipping calculated in cart
BattleHawk Armory · 14 offers
Hornady 82044 American Whitetail 300 Win Mag 180 gr InterLock Spire Point 20 Bx/ 10 Cs$30.03
$1.50/rd · 20 rds
Shipping calculated in cart
E-Commerce Arms · 11 offers
Norma WhiteTail Rifle Ammunition .300 Win Mag 150gr PSP 3248 fps 20/ct$30.37
$1.52/rd · 20 rds
Shipping calculated in cart
Natchez Shooting and Outdoors · 11 offers
Fiocchi Field Dynamics Rifle Ammunition .300 Win Mag 180 gr PSP 3000 fps 20/ct$31.49
$1.57/rd · 20 rds
Shipping calculated in cart
Brownells · 12 offers
Hornady American Whitetail(R) 300 Win Mag Interlock(R) Sp Rifle Ammo - American Whitetail 300 Win Mag 150gr Interlock Sp 20/Box$32.99
$1.65/rd · 20 rds
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Natchez Shooting and Outdoors · 3 offers
Sellier-Bellot Sellier & Bellot eXergy Blue Rifle Ammunition .300 Win Mag 180gr 2753 fps 20/ct$32.99
$1.65/rd · 20 rds
Shipping calculated in cart
BattleHawk Armory · 8 offers
Hornady American Whitetail Tipped .300 Win Mag, 165gr SST, 20rd Box$33.57
$1.68/rd · 20 rds
Shipping calculated in cart
E-Commerce Arms · 5 offers
Ammo Inc 300WM10SPA20 Hunt 300Win 180gr Soft Point 20 Per Box/10 Case$35.64
$1.78/rd · 20 rds
Shipping calculated in cart
GrabAGun · 13 offers
Winchester Power Point Brass .300 Win 150 Grain 20-Rounds PP$37.49
$1.88/rd · 20 rds
Shipping calculated in cart
Natchez Shooting and Outdoors
Hornady American Whitetail Rifle Ammunition .300 Win 150 gr SP 3275 fps 20/ct$37.99
$1.90/rd · 20 rds
Shipping calculated in cart
BattleHawk Armory · 10 offers
Supreme Long Rnge 300WM BC Max 195gr 20/Bx$38.45
$1.92/rd · 20 rds
Shipping calculated in cart
BattleHawk Armory · 15 offers
Federal 300WBS Power-Shok 300 Win Mag 180 gr Jacketed Soft Point (JSP) 20 Bx/ 10 Cs$38.93
$1.95/rd · 20 rds
Shipping calculated in cart
Natchez Shooting and Outdoors · 13 offers
Federal Copper Power-Shok Rifle Ammunition .300 Win Mag 180gr CHP 20/ct$39.49
$1.97/rd · 20 rds
Shipping calculated in cart
BattleHawk Armory · 14 offers
Remington Ammunition Core-Lokt 300 Win Mag 180GR Pointed Soft Point 20rds$40.25
$2.01/rd · 20 rds
Shipping calculated in cart
E-Commerce Arms · 10 offers
Norma Ammunition 20174762 Oryx 300WinMag 180gr 20 Per Box/10 Case$40.95
$2.05/rd · 20 rds
Shipping calculated in cart
E-Commerce Arms · 7 offers
Ammo Inc 300WM190BTHPA20 Compete 300WinMag 220gr Open Tip Match 20 Per Box/10 Case$40.96
$2.05/rd · 20 rds
Shipping calculated in cart
Primary Arms
Freedom Munitions Range 300 Win Mag 175gr HPBT Ammo - Box of 20$41.20
$2.06/rd · 20 rds
Shipping calculated in cart
BattleHawk Armory · 8 offers
Winchester X300DS2 Deer Season XP 300 WIN MAG 180 Gr 20 rd box$41.35
$2.07/rd · 20 rds
Shipping calculated in cart
.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.