There is no benefit to a .45-90 over the .45-70 if you are using smokeless powder. Black Powder is a different matter
Very true. Even with black, the main advantage of the .45-90 is flexibility in fitting the powder charge, wads, seating the bullet, etc. I've hotrodded a .45-70 with black powder to 1500 yards, but it involved a lot more fussing than a .45-90 would need.
Paul
