Amen brother! I took my Bison with my 45-70, along with a whole bumch of wild boar and a whole lot of deer. If I had not jammed the rifle by short stroking it the day before my elk hunt I would have taken my elk with it as well, I had to use my guide's o6 for my elk. I wonder it the op has any idea of how many bison were taken with the 45-70 back in the market hunting for Buffalo days. Hornady and Buffalo Bore 45-70 cartridges pack a wallop that will drop pretty much all big game in North America as has been already said. Weak cartridge not suitable for big game,I think not. BTW, the plural for moose is moose, not mooses! PS, the 45-70 will efficiently kill any animal you have in Brazil as well'