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Hi Dan, muzzle velocity is 1425 fps and muzzle energy is 1623 ft/lbs Full specs here >>> https://underwoodammo.com/454-casull-360gr.-long-wide-nose-gas-check-black-cherry-coated-hard-cast-hunting-ammo/ Stay safe & have a great day!

Velocity 1425 FPS Muzzle energy 1623 Ft Lbs see ***** Underwood Ammo .454 Casull Ammunition Specifications and Features: Item Number: 738 .454 Casull Bullet Type: Lead Flat Nose with Gas Check Bullet Weight: 360 Grain Core Material: Coated hard Cast Lead Coating: Polymer Based Black Cherry Compound ******Velocity: 1425 fps *****Muzzle Energy: 1623 ft/lbs. Sectional Density: 0.25 Flash Suppressed Powder Nickel Plated Brass Case Usage: Hunting 20 Round Box

Hi Dan and welcome back. Muzzle Velocity is 1425 fps and Muzzle Energy is 1623 ft/lbs as tested from a 6-inch test barrel. Cheers, stay safe and enjoy!