.40 S&W vs 9mm - Price, Recoil & Ballistics Compared

Side-by-side price comparison with live market data

Looking for a deep dive? Read our full .40 S&W vs 9mm comparison guide with ballistics, capacity, recoil, and use-case analysis.

Current Prices

Metric.40 S&W9mm
Lowest Price$0.165/rd$0.108/rd
Midpoint (per product)$0.590/rd$0.494/rd
Range / practice midpoint$0.380/rd$0.298/rd
Defensive / premium midpoint$1.00/rd$0.830/rd
Highest Price$2.50/rd$3.00/rd
Products Tracked557997
Retailers2121

Prices reflect 30-day observed in-stock data across tracked online retailers. Updated daily.

.40 S&W

IronScout provides observed price and availability data for .40 S&W ammo prices ammunition across tracked online retailers. Data reflects historical price observations and does not include purchase recommendations.

Observed 30-Day Price Range (Per Round): median: 0.590, lowest: 0.165, highest: 2.495, sample size: 14181.

Lowest observed price in the trailing 7-day window: 0.260.

Prices last updated August 13, 2026 · 557 listings tracked across 21 retailers · 31 days with data in the 30-day window

How we calculate this

SQL PERCENTILE_CONT over daily-best per-product-per-day observed in-stock prices

  • Daily-best is MIN(price_per_round) per (caliber, product, UTC day).
  • Only in-stock observations included.
  • Coverage varies by retailer and source.

9mm

IronScout provides observed price and availability data for 9mm ammo prices ammunition across tracked online retailers. Data reflects historical price observations and does not include purchase recommendations.

Observed 30-Day Price Range (Per Round): median: 0.494, lowest: 0.108, highest: 2.998, sample size: 24673.

Lowest observed price in the trailing 7-day window: 0.116.

Prices last updated August 13, 2026 · 997 listings tracked across 21 retailers · 31 days with data in the 30-day window

How we calculate this

SQL PERCENTILE_CONT over daily-best per-product-per-day observed in-stock prices

  • Daily-best is MIN(price_per_round) per (caliber, product, UTC day).
  • Only in-stock observations included.
  • Coverage varies by retailer and source.
Search .40 S&WSearch 9mm

Frequently Asked Questions

Is .40 S&W or 9mm cheaper?
.40 S&W currently starts at $0.16/rd (per-product midpoint $0.59/rd). 9mm starts at $0.11/rd (per-product midpoint $0.49/rd). Prices are observed across tracked online retailers and updated daily.
Should I choose .40 S&W or 9mm?
The choice between .40 S&W and 9mm depends on your firearm, intended use, and budget. IronScout provides pricing and availability data to help inform your decision — not recommendations. Compare current prices for both calibers on IronScout.

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