.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
Winchester Super-X 300 Winchester Magnum 150 Grain Power-Point$42.99
Shipping calculated in cart
Target Sports USA
Hornady American Whitetail 300 Winchester Magnum Ammo 180 Grain Interlock Spire - 82044$32.25
Shipping calculated in cart
Target Sports USA
Remington Premier 300 Winchester Magnum 180 Grain AccuTip Boat Tail$49.99
Shipping calculated in cart
Target Sports USA
Winchester Super-X 300 Winchester Magnum 180 Grain Power-Point$37.99
Shipping calculated in cart
Target Sports USA
Hornady American Whitetail 300 Winchester Magnum Ammo 150 Grain InterLock Soft Point - 8204$29.90
Shipping calculated in cart
Target Sports USA
Aguila Interlock 300 Winchester Magnum Ammo 180 Grain Boat Tail Soft Point - 82044AG$29.99
Shipping calculated in cart
Target Sports USA
Hornady Superformance 300 Winchester Magnum Ammo 180 Grain Super Shock Tip - 82193$48.50
Shipping calculated in cart
Target Sports USA
Fiocchi Hyperformance 300 Winchester Magnum Ammo 180 Grain SST Polymer Tip Boat Tail - 300WMHSA$44.99
Shipping calculated in cart
Target Sports USA
Remington Express 300 Winchester Magnum Ammo 150 Grain Core-Lokt PSP Soft Point - R300W1$36.50
Shipping calculated in cart
Target Sports USA
Lapua 300 Winchester Magnum 185 Grain Soft Point - 4317312$38.99
Shipping calculated in cart
Target Sports USA
Black Hills 300 Winchester Magnum Ammo 190 Grain Match Hollow Point Boat Tail$46.06
Shipping calculated in cart
Target Sports USA
Prvi Partizan 300 Winchester Magnum Ammo 150 Grain Soft Point - PP3001$32.50
Shipping calculated in cart
Target Sports USA
Sig Sauer Marksman Hunter 300 Winchester Magnum Ammo 165 Grain Hollow Point Boat Tail - E3WMGK165-20$42.50
Shipping calculated in cart
Target Sports USA
Ammo Inc Hunt SP 300 Winchester Magnum Ammo 180 Grain InterLock Soft Point - 300WM180SPA20$39.75
Shipping calculated in cart
Target Sports USA
Federal Gold Medal 300 Winchester Magnum Ammo 190 Grain Sierra MatchKing Hollow Point - GM300WM$48.54
Shipping calculated in cart
Target Sports USA
Federal Fusion 300 Winchester Magnum Ammo 165 Grain Bonded Soft Point - F300WFS2$42.99
Shipping calculated in cart
Target Sports USA
Federal Trophy Copper 300 Winchester Magnum Ammo 180 Grain Solid Copper Polymer Tip - P300WTC1$50.49
Shipping calculated in cart
Target Sports USA
Browning BXS 300 Winchester Magnum Ammo 180 Grain Solid Expansion Terminal Tip - B192403001$49.99
Shipping calculated in cart
Target Sports USA
Armscor USA 300 Winchester Magnum Ammo 165 Grain Accubond$36.64
Shipping calculated in cart
Target Sports USA
Federal Premium Barnes TSX 300 Winchester Magnum Ammo 180 Grain Barnes Triple?Shock?X Hollow Point - P300WP$52.02
Shipping calculated in cart
Target Sports USA
Winchester Expedition 300 Winchester Magnum Ammo 190 Grain AccuBond Long Range$43.99
Shipping calculated in cart
Target Sports USA
Federal Edge TLR 300 Winchester Magnum Ammo 200 Grain Polymer Tip Boat Tail$48.95
Shipping calculated in cart
Target Sports USA
Federal Power-Shok 300 Winchester Magnum Ammo 150 Grain Jacketed Soft Point - 300WGS$33.26
Shipping calculated in cart
Target Sports USA
Federal Premium 300 Winchester Magnum Ammo 185 Grain Berger Hybrid - P300WSMBCH1$51.25
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.
Price alert for .300 Win Mag
We will email you when the best tracked cost per round hits your target. Free. No account needed. Unsubscribe anytime.
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.