If it could push out a 480 gr bullet 500 fps (or more ) faster then it might.
Isn't the .45/70 equivalent to the British .577/.450 and nobody raves about them as dangerous game rifles, even if used with hard cast flat point lead bullets?
-------------------- John aka NitroX
...
Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"