9mm vs .357 SIG - Price, Recoil & Ballistics Compared

Side-by-side price comparison with live market data

Current Prices

Metric9mm.357 SIG
Lowest Price—$0.470/rd
Midpoint (per product)$0.682/rd$1.00/rd
Range / practice midpoint$0.315/rd$0.700/rd
Defensive / premium midpoint$0.920/rd$1.20/rd
Highest Price—$2.29/rd
Products Tracked145993
Retailers3525

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

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 (Per Round): median: $0.682, sample size: 23587.

Prices last updated November 11, 2026 · 1459 listings tracked across 35 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.

.357 SIG

Observed 30-day price distribution

IronScout provides observed price and availability data for .357 SIG 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: $1.000, lowest: $0.470, 95th-percentile high: $1.849, sample size: 2147.

Lowest observed price in the trailing 7-day window: $0.480.

Prices last updated November 11, 2026 · 93 listings tracked across 25 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 9mm by cost per roundSearch .357 SIG by cost per round

Frequently Asked Questions

How do 9mm and .357 SIG midpoint prices compare?
9mm shows a per-product midpoint of $0.68/rd and .357 SIG $1.00/rd. Prices are observed across tracked online retailers and updated daily.
Should I choose 9mm or .357 SIG?
The choice between 9mm and .357 SIG 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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