.40 S&W Ammo Prices & Cost Per Round

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

Products Tracked

$0.56/rd

Best CPR →

$0.81/rd

Median CPR

$13.99

Cheapest Box →

In Stock

2026-06-30

Last Updated

Filter by grain weight: All 78gr 88gr 115gr 120gr 122gr 125gr 130gr 135gr 140gr 150gr 155gr 160gr 165gr 170gr 175gr 180gr 200gr 205gr Showing 16 125gr products

Track .40 S&W ammo cost per round in real time across 3 retailers. We're monitoring 16 .40 S&W products (6 priced offers with CPR data) with box prices starting at $13.99. The typical cost per round is $0.81, with the best deal at $0.56/round. 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.

.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

Frequently Asked Questions

What is a good cost per round for .40 S&W?

The best cost per round we're currently tracking for .40 S&W is $0.56/round. A typical CPR across 6 tracked offers is $0.81/round. Prices vary by brand, grain weight, and retailer.

Is .40 S&W ammo cheap right now?

The typical cost per round for .40 S&W is $0.81. 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 .40 S&W ammo?

Based on our real-time tracking across 3 retailers, the cheapest .40 S&W ammo starting at $13.99/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