This is currently loaded obsolete black powder cartridge rifle ammunition for rifles chambered in 577-450 Martini Henry chambering. These are loaded using Swiss Black Powder, properly head stamped boxer primed brass and .460" 480 grain RN bullets (item #460481) cast from 20-1 alloy lubed with SPG loaded using the same charge of black powder as they did originally, 85 grains of black powder.
1,247 fps, U.S. Military trials in the 1800's at Springfield Armory and Sandy Hook chronographed ammo of the day at 1,253 fps!
WARNING! BE SURE TO CHECK THE GROOVE DIAMETER OF YOUR RIFLE BEFORE YOU PURCHASE THIS AMMO, NO RETURNS ON AMMUNITION!
NOTE: All ammunition is shipped via FedEx or UPS Ground "Adult Signature Required" Only. So be sure you have a physical shipping address on your order as they will not deliver to a P.O. Box.