From its name, you may be able to understand how the 45-70 ammo functions; the US military named this ammunition after its calibre and the grains of powder powering it, hence the 45 calibre projectile, propelled by 70 grains of black gunpowder.
The first .45-70 ammo was designed in 1873 by the USA government at its Springfield Armory for centre-fire rifles which used black gunpowder. Its creation was for the replacement of its predecessor, the 50-70 ammo.
However, these modern times have created new, current loadings that function on smokeless gunpowder, and they have greatly enhanced the 45-70 ammo ballistics.
The .45-70 ammo has a straight rim. The bullet's diameter is 11.6mm, the neck is 12.2mm, and the base is 12.8mm. The rim is 1.8 inches thick with a 15.4 diameter.
For ballistics performance, a 300 grained (strong JHP) bullet moves at a velocity of 2,275 feet per second. A 300 grained Trapdoor bullet moves at a rate of 1,394 feet per second. A 300 grained Standard JHP bullet moves at a velocity of 2,069 feet per hour, and a 405 grained Trapdoor bullet moves at a 1,394 feet per second velocity.
At first, this ammunition gained popularity among sportspeople that soon enough, it was primarily manufactured for non-military purposes that included game hunting and shooting sports.
It is very suitable for gaming sports because it doesn’t damage edible meat on more miniature games. With the right bullets and well-calculated range, the 45-70 ammo hunts down minor game like birds and bigger ones like elephants because of its high impact effect.