Typical 45-70 ballistics with modern factory ammo are a 300gr bullet at 2,350fps (3,678 ft-lbs), a 325gr bullet at 2,050fps (3,032 ft-lbs), and a 405gr bullet at 1,330fps (1,591 ft-lbs). The .45-70 Govt is very effective out to around 150 yards with minimal bullet drop, but it's capable of great accuracy and longer range shooting as well.. 459 posts · Joined 2005. #26 · Aug 8, 2014. While I didn't stop a grizzly charge I carried my 18.5" barreled Marlin 1895GS in 45-70 loaded with 525gr @ 1600fps when I went into the thick bush after my grizzly. I shot it with my 26" barreled 375RUM loaded with 300gr Partitions @ 2775fps.

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The .45-70, now almost 150 years old, is a pretty good bear cartridge. It has a modern, strong brass case and shoots nicely heavy, but because of one popular antique black powder rifle, the Trapdoor Springfield, the powder charge in factory ammunition must duplicate the puny original black powder load dating back to 1873.. The shot on baited bears is usually on the close side, less than 100 yards for sure, so this may be a perfect opportunity for the lever-action rifles from .30-30 Winchester, to .35 Remington to .45-70 Government. The lighter cartridges—especially the .30-30—will handle black bears with no issue. My dad loves his Browning Centennial 1886 in.