Are you sic of new rifle cartridges? Wish they just make enough of the old ones? Well don’t hold your breath while you wait. Ammo designers have been cranking out new, redundant, and sometimes superfluous new cartridges for more than 150 years — and show no signs of stopping. Meet some of the forgotten rounds of yesteryear.

The fascinating history of the mid-20th century struggle between the 243 Winchester and 244/6mm Remington cartridges for the hearts and wallets of American hunters.