The .45-70 has been shot at long range for over a century and is still capable of being shot at long range today. Yes, the velocity is low in comparison to modern rifle cartridges but that doesn't mean that it can't reach out and touch. Yes, the trajectory looks like a rainbow when it is graphed, but it is a consistent rainbow, so adjustments can be made to match up point of aim with point of impact at extreme ranges.My collector in me wants to get a 45-70, I think the Marlin is a sexy gun, but then I get to thinking. Wouldn't a slug from a 12 gauge be just as good? I know the range on the 45-70 isn't fantastic, and that it has more penetration, but from a only in the USA point of view, is there anything a 45-70 can take that a slug can't? I need justification to buy the rifle, and the ammo, which cost a decent amount more than slugs.
The .45-70, if properly applied, can take pretty much anything that walks on the face of the Earth. When you hit something with 405gr of lead going that fast, you tend to make a lasting impression.