AMMO INDEX

9mm$28.99/50rd▼ -4.9%.45 ACP$42.5/50rd▲ +3.2%.40 S&W$31.99/50rd▼ 0.0%10mm$44.99/50rd▲ +3.4%5.56$49.99/100rd▼ -7.4%.308$64.99/20rd▲ +2.3%6.5 CM$44.99/20rd▼ -4.3%7.62x39$39.99/100rd▼ -11.1%12ga$22.99/25rd▲ +2.2%.22 LR$18.99/325rd▼ -5.0%9mm$28.99/50rd▼ -4.9%.45 ACP$42.5/50rd▲ +3.2%.40 S&W$31.99/50rd▼ 0.0%10mm$44.99/50rd▲ +3.4%5.56$49.99/100rd▼ -7.4%.308$64.99/20rd▲ +2.3%6.5 CM$44.99/20rd▼ -4.3%7.62x39$39.99/100rd▼ -11.1%12ga$22.99/25rd▲ +2.2%.22 LR$18.99/325rd▼ -5.0%

✦ AI POWERED

PISTOL AMMUNITION

.40 S&W

$31.99per 50rd

$0.640/rd▼ 0.0% this week

Buy Now — Best Price Price History

Price at a Glance

Current Price$31.99

Previous Price$31.99

7-Day Change0.0%

Price Per Round$0.640

Box Size50 rounds

✦ AI Price Analyst

30-day forecast powered by Claude

Click "Get AI Forecast" for a 30-day price prediction and buy/wait recommendation for .40 S&W ammo.

Compare Retailers

Palmetto State Armory$31.99 →Brownells$32.49 →Lucky Gunner$32.99 →Ammo.com$33.49 →Wideners$33.99 →

.40 S&W — Buying Guide 2026

The .40 S&W is one of the most tracked calibers on FieldOps HQ. Currently priced at $31.99 per 50 rounds ($0.640 per round), it has seen a 0.0% change over the past week.

When to Buy .40 S&W Ammo

Based on 3 years of price data, .40 S&W ammo is best purchased when the price-per-round drops below $0.576. Set a price alert above to get notified automatically.

Best Uses for .40 S&W

.40 S&W is popular for self-defense, range training, and competition shooting. FMJ loads are ideal for range use while hollow points are recommended for defensive carry.

Other Calibers