Ammunition prices split in October 2026. The price-per-round of five out of the 12 most popular calibers rose, five fell, and two were unchanged, according to Caliber King's Monthly Ammo Price Report. .22 LR ammunition prices had the largest percentage increase, up 4.9% to 7.5¢ per round. 6.5 Creedmoor also rose, up 3¢ per round, or 3.1%, to 98¢. .357 Magnum had the largest percentage decline, down 1.8% to 51¢ per round. 9mm was unchanged at 22.9¢ per round, near its six-month high of 23.1¢, and .380 ACP was also flat, at 29.6¢.
"October was a split month. Five of the 12 most popular calibers we track rose and five fell, with two of the most popular calibers, 9mm and .380 ACP remaining flat," said Hilton Hart, founder and CEO of Caliber King. ".22 LR prices rose the most, up 4.9%, while .357 Magnum had the biggest percentage decrease, down nearly 2%."
Caliber King compiles the monthly figures from daily average price-per-round snapshots across a network of online retailers. It will keep publishing these findings each month. Interactive graphs for all 12 calibers are at caliberking.com/ammo-prices. Methodology is at caliberking.com/about-our-data.
About Caliber King:CaliberKing.com is a nationwide ecommerce search platform for ammunition, guns, magazines, and reloading components. Caliber King aggregates listings from more than 213 online retailers and more than 1,468,455 active product listings, refreshing pricing data every 10 minutes, or as often as retailers allow. Founded in 2025 by entrepreneur and gun enthusiast, Hilton Hart, Caliber King aims to be the number one online shopping destination for 2A product buyers who want a faster, clearer, and more informed way to compare prices across hundreds of retailers.