.40 S&W Ammo Price Per Round — May 2026

Cheapest right now: $0.263/rd · Median: $1.150/rd · 4 retailers tracked

Last updated May 13, 2026

Cheapest Right Now

$0.263/rd

$13.15 per box of 50

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30-Day Price Summary

MetricPrice Per RoundPer Box of 50
Lowest Observed$0.263$13.15
25th Percentile$0.580$29.00
Median$1.150$57.50
75th Percentile$1.649$82.47
Highest Observed$7.800$390.00

Based on 3787 observations over 31 days across 4 retailers · 158 products tracked

Frequently Asked Questions

What is the current .40 S&W ammo price per round?
As of May 2026, .40 S&W ammo costs a median of $1.150/rd across 4 tracked retailers. The lowest observed price is $0.263/rd. Prices are updated daily from 158+ product listings.
What is a good price per round for .40 S&W?
Over the past 30 days, the 25th percentile price for .40 S&W is $0.580/rd — prices at or below this level represent a good deal. The median is $1.150/rd, so anything below the median is better than average.
Are .40 S&W ammo prices going up or down?
Based on 3787 price observations over 31 days, the current median is $1.150/rd. IronScout tracks observed prices — not predictions. Set up free price alerts to be notified of significant changes.

Data Methodology

IronScout collects observed in-stock prices from tracked online retailers daily. Price statistics are calculated using the daily-best observed price per product per day — meaning the lowest price seen for each distinct product on each calendar day.

  • Only in-stock products are included in calculations
  • Median and percentile values use SQL PERCENTILE_CONT over daily-best prices
  • Coverage varies by retailer and data source
  • Historical data is append-only and never modified after collection

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: 1.150, lowest: 0.263, highest: 7.800, sample size: 3787.

Lowest observed price in the trailing 7-day window: 0.329.

Prices last updated May 13, 2026 · 158 listings tracked across 4 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.
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