.40 S&W Ammo Prices & Cost Per Round

Real-time price tracking across 3 retailers. Updated every 2 hours.

9
Products Tracked
$1.04/rd
Best CPR →
$25.99
Cheapest Box →
4
In Stock
2026-09-24
Last Updated
.40 S&W is down 5.3% in the last 7 days (current median 62.5¢/rd vs prior 23-day median 66.0¢/rd)
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Track .40 S&W ammo cost per round in real time across 3 retailers. We're monitoring 9 .40 S&W products (3 priced offers with CPR data) with box prices starting at $25.99. .40 S&W prices are down 5.3% over the past week compared to the previous three weeks. Prices are updated every 2 hours. Click any product to see its full price history and set a price drop alert.

.40 S&W Ammo Buying Context

.40 S&W ammo searches often mix range FMJ, law-enforcement style defensive loads, and bulk handgun-ammo offers. This tracker focuses on live .40 S&W prices, cost per round, and stock status so shoppers can separate a real deal from a high-priced specialty load.

Use this page to compare .40 caliber ammo prices across retailers, then move through the related handgun hubs to benchmark .40 S&W against 9mm, .45, and 10mm.

Related Ammo Hubs

9mm Ammo Compare high-volume handgun ammo pricing. .45 Ammo Check larger handgun-ammo costs. 10mm Ammo Compare higher-power handgun ammo pricing. Pistols Browse tracked pistol listings and price history. Ammo Hub Return to all ammo price trackers.

.40 S&W Search Questions We Track

.40 S&W Ammo Prices

Compare current .40 S&W ammo listings by cost per round, stock status, and box size. This helps separate range FMJ pricing from defensive ammunition.

  • 40 s&w ammo
  • .40 ammo prices
  • 40 caliber ammunition

.40 S&W Cost Per Round History

.40 S&W Price by Month

Month Median CPR Lowest CPR Change
September 2026 65.5¢/rd 18.4¢/rd +3.9%
August 2026 63.0¢/rd 18.4¢/rd +1.1%
July 2026 62.3¢/rd 18.4¢/rd -5.6%
June 2026 66.0¢/rd 18.0¢/rd +3.2%
May 2026 63.9¢/rd 18.0¢/rd +1.5%
April 2026 63.0¢/rd 8.3¢/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

How has .40 S&W price changed recently?

Over the past week, .40 S&W prices have dropped 5.3% — the median cost per round moved from 66.0¢/rd to 62.5¢/rd. This is measured across in-stock products only and compares the last 7 days to the previous 23 days.

Where can I find the cheapest .40 S&W ammo?

Based on our real-time tracking across 3 retailers, the cheapest .40 S&W ammo starting at $25.99/box. We compare prices from E-Commerce Arms, GrabAGun, Palmetto State Armory and more.

What makes .40 S&W ammo a good deal?

A good .40 S&W ammo deal depends on CPR, round count, bullet type, and stock status. Range ammunition and defensive hollow points should not be judged by box price alone.

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

All .40 S&W Ammo — Lowest CPR First