British 1853 Pattern Enfield rifle-musket, .577 caliber. General History The British 1853 Pattern Enfield rifle-musket, .577 caliber also fired a .58-caliber bullet used by both the Union and the ...

KNEELING in the back of a pickup truck, buffeted by cold wind and spraying seawater, Allen Ingling struggled to stay focused as he aimed a .577 caliber rifle at a young humpback whale stranded in ...