300 Blackout Ammo Prices & Cost Per Round
1,445 listings tracked · 887 in stock, across 16 retailers. Retailer feeds are checked every 15 minutes.
300 Blackout by Use Case
300 Blackout Cost Per Round History
300 Blackout Price by Month
| Month | Median cost per round | Lowest cost per round | Change |
|---|---|---|---|
| November 2026 | $1.45/rd | 40¢/rd | -1.4% |
| October 2026 | $1.47/rd | 40¢/rd | -2.0% |
| September 2026 | $1.50/rd | 40¢/rd | +1.5% |
| August 2026 | $1.48/rd | 59¢/rd | -1.5% |
| July 2026 | $1.50/rd | 62¢/rd | -0.6% |
| June 2026 | $1.51/rd | 62¢/rd | +0.6% |
| May 2026 | $1.50/rd | 62¢/rd | -3.2% |
| April 2026 | $1.55/rd | 62¢/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.
Frequently Asked Questions
What is a good cost per round for 300 Blackout?
The best cost per round we're currently tracking for 300 Blackout is $0.50/round. A typical CPR across 621 tracked offers is $1.45/round. Prices vary by brand, grain weight, and retailer.
Is 300 Blackout ammo cheap right now?
The typical cost per round for 300 Blackout is $1.45. 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.
How do 300 Blackout prices vary by use case?
300 Blackout ammo falls into different price tiers depending on intended use. Range / FMJ has a median of 77¢/rd (best deal 40¢/rd across 16 products). Subsonic has a median of 86¢/rd (best deal 80¢/rd across 8 products).
Where can I find the cheapest 300 Blackout ammo?
Based on our tracking across 16 retailers, the cheapest 300 Blackout ammo starting at $11.49/box. We compare prices from Ammunition Depot, BattleHawk Armory, Bereli, Brownells and more.
What should I compare when shopping for 300 Blackout ammo?
Compare cost per round, bullet type, and whether the load is subsonic or supersonic. 300 Blackout ammunition can vary widely by intended use, so a low range-ammo CPR is not always comparable to a defensive or subsonic load.
Other Calibers
Compare 300 Blackout ammo by cost per round. Open any product to see its full price history or set a price alert.
300 Blackout Ammo Buying Context
300 Blackout ammo sits in a useful middle lane for AR-pattern rifles: shoppers often compare supersonic range loads, subsonic suppressor loads, and defensive ammunition on the same search. This tracker keeps those .300 Blackout ammo prices together so cost per round and stock signals are easier to compare.
Use this page when you are comparing 300 Blackout ammunition across retailers, then follow the related rifle-caliber hubs below when you want to benchmark it against common alternatives.