Alot of guys here and elsewhere use the .45/70 and the new Lever-Revolution ammo to hunt deer. I haven't shot a .45/70 or the new Lever ammo but hey it's taken Buffalo why not a deer?
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I have shot two deer, and two elk with the .45/70 LeverEvolution ammo, and after seeing it perform on the two elk I shot and the two elk friends of mine blasted with it my ONLY concern would be that the bullet might not expand at all on a deer. I have yet to see an animal shot with it where a bullet could be recovered. BUT, if you were shooting a .30 cal, or .270 and they expanded to .45 that would be pretty decent performance so i would say do it. I love my little 1886 .45/70 so I will continue to deer hunt wid it.
.45-70 has most likely taken many thousands of deer over its lifetime.
The thing about larger diameter, heavier bullets is the velocity factor.
For instance, a .338 Win Mag is often seen as too much for deer due to meat destruction.
So, study the ballistics charts to chart your decision.
I have seen deer killed with a 45/70, the meat loss was relatively low...a .300winmag on the other hand will mess up some meat! A cousin of mine used the .300 for several years, and I have seen the damage firsthand. I would rather use a 45/70 then a smaller caliber "magnum" IMO. A 45/70 does a little less damage then a 12G slug, or maybe about the same.
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