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Family Owned and Operated Ammo Sales, Stillwater OK

Orders placed at this time are estimated to take 1 to 2 business days to be shipped out of our warehouse, then normal UPS ground transit times from our warehouse in Oklahoma to you. FREE SHIPPING on any order with a subtotal of $200 or more.

38-40 Revolver Ammo

Shop .38-40 Revolver Ammo – Vintage Caliber, Frontier Legacy

Explore .38-40 Winchester (10.17x33mmR) revolver ammunition at SGAmmo—your trusted source for classic pistol cartridges offered at competitive prices. Whether you're a cowboy action enthusiast, a vintage revolver aficionado, or simply drawn to firearms with storied pasts, this cartridge speaks to a heritage that shaped the Old West.

Introduced in 1874 for the Winchester Model 1873 lever-action rifle, the .38-40 WCF was named despite firing a true .40-caliber (0.401˝) bullet—a quirk that has been part of its charm for over a century. Though it originated in a rifle, the round found a place in large-frame revolvers such as Colt’s Single Action Army and New Service—trusted for its manageable recoil and respectable performance at close ranges.

Everything listed here ships quickly and securely—straight from our warehouse to your door. At SGAmmo, we value the preservation of historical calibers, offering dependable service and fair pricing for beloved vintage ammunition. Whether you're reloading for a cowboy match or keeping a piece of frontier history in working condition, now’s the right time to secure your supply of .38-40 WCF revolver ammo with confidence!

Image Name Qty. In Stock Price

50 Round Box - 38-40 Cowboy Action 180 Grain FPL Black Hills Ammo - DCB3840N1

SKU: DCB3840N1 - Box
13 $57.95 Each 10+ @$56.95 ($1.16 Per Round)

500 Round Case - 38-40 Cowboy Action 180 Grain FPL Black Hills Ammo - DCB3840N1

SKU: DCB3840N1 - Case
2 $569.50 Each FREE
SHIPPING
1+ @$569.50 ($1.14 Per Round)

50 Round Box - 38-40 Cowboy Action 180 Grain FPL Black Hills Ammo - DCB3840N1

SKU: DCB3840N1 - Box
13 In Stock
$57.95 Each 10+ @$56.95 ($1.16 Per Round)

500 Round Case - 38-40 Cowboy Action 180 Grain FPL Black Hills Ammo - DCB3840N1

SKU: DCB3840N1 - Case
2 In Stock
$569.50 Each
FREE SHIPPING
1+ @$569.50 ($1.14 Per Round)