The Winchester Super-X Rifle Ammo 45-70 Govt 405 gr Cowboy LFN in the Cowboy Load series offers shooters a reliable, heavy-for-caliber option built for hard-hitting short- to medium-range work, and if you run a lever gun for frontier-style hunts or compete in cowboy action matches this cartridge delivers the momentum you need. With a 405-grain lead flat nose bullet producing about 1150 fps and roughly 1189 ftlbs of muzzle energy, this load brings controlled expansion and strong penetration useful for thick brush hunting, large game at moderate distances, and punching clean holes on target at the range; the brass casing and ORM-D hazardous air marking ensure safe handling and compatibility with standard lever- and single-shot rifles chambered in 45-70 Govt. As part of Winchesters Super-X/Cowboy Load lineup, the cartridge emphasizes traditional performance traits favored by shooters who trust proven terminal characteristics, and its American origin and clear ballistic profile make it a go-to choice for sport shooting, field practice, and historical shooting events where consistent, heavy-for-caliber performance matters.